Pathways to Astronomy 5Th Edition By Steven Schneider - Test Bank

Pathways to Astronomy 5Th Edition By Steven Schneider – Test Bank

 

Instant Download – Complete Test Bank With Answers

 

 

Sample Questions Are Posted Below

 

Part 4 Test Bank – Stars and Stellar Evolution

 

The study of waves inside the sun is called …

 

1.	The study of waves inside the sun is called _____. A. solar waveology   B. helioseismology   C. corona holes   D. photospheric waves Began in 1960s.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 51.05 Section: 54.02 Subtopic: Solar Activity Subtopic: Solar Interior Structure Topic: The Sun Unit: 51

The sun does not expand or contract because…

 

2.	The sun does not expand or contract because it is in a state of ______. A. convective equilibrium   B. coronal equilibrium   C. photosphere equilibrium   D. hydrostatic equilibrium All stars that are normal are doing this.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 51.02 Subtopic: Interior Dynamics of the Sun Subtopic: Interior Processes for the Sun Subtopic: Solar Interior Structure Topic: The Sun Unit: 51

This part of the sun’s atmosphere is at a temperature about 1,000,000 K:

 

3.	This part of the sun’s atmosphere is at a temperature about 1,000,000 K: A. photosphere   B. chromosphere   C. corona   D. spicule Thin, but molecules are moving fast.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 51.04 Subtopic: Solar Atmosphere Topic: The Sun Unit: 51

Granulation on the Sun is evidence of

 

4.	Granulation on the Sun is evidence of A. convection in the photosphere.   B. seismic activity in the core of the Sun.   C. magnetic activity in the corona.   D. spicules in the chromosphere.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 51.03 Subtopic: Interior Processes for the Sun Subtopic: Solar Interior Structure Topic: The Sun Unit: 51

The core of the sun moves energy primarily b…

 

5.	The core of the sun moves energy primarily by convection. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 51.03 Subtopic: Interior Processes for the Sun Subtopic: Solar Interior Structure Topic: The Sun Unit: 51

A good analogy for magnetic waves in the sol…

 

6.	A good analogy for magnetic waves in the solar atmosphere is similar to cracking a whip. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 51.04 Subtopic: Solar Atmosphere Subtopic: Solar Magnetic Field Topic: The Sun Unit: 51

In E=mc2 -c stands for _____.

 

7.	In E=mc2 -c stands for _____. A. speed of sound   B. energy construction   C. speed of light   D. energy of fusion 300,000 km/sec

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 52.01 Subtopic: Interior Processes for the Sun Subtopic: Proton-proton Chain Topic: The Sun Unit: 52

The force that holds the nucleus of the atom…

 

8.	The force that holds the nucleus of the atom together is called the _____. A. weak force   B. nuclear force   C. neutron force   D. E-M force Strongest but short ranged.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 52.01 Subtopic: Interior Processes for the Sun Subtopic: Proton-proton Chain Topic: The Sun Unit: 52

This is an almost massless particle that is …

 

9.	This is an almost massless particle that is produced in fusion: A. proton   B. electron   C. neutron   D. neutrino Means ghost particle.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 52.02 Subtopic: Interior Processes for the Sun Subtopic: Neutrinos Subtopic: Proton-proton Chain Topic: The Sun Unit: 52

The Sun’s source of energy is

 

10.	The Sun’s source of energy is A. fission of heavy elements.   B. fusion of hydrogen into helium.   C. combustion of hydrogen with oxygen.   D. heat generated by gravity.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 52.02 Subtopic: Interior Processes for the Sun Subtopic: Proton-proton Chain Topic: The Sun Unit: 52

Cosmic rays are fast moving particles in spa…

 

11.	Cosmic rays are fast moving particles in space. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 52.03 Subtopic: Solar Activity Subtopic: Solar Magnetic Field Subtopic: Sunspots and Sunspot Cycle Topic: The Sun Unit: 52

The three-step process that creates energy i…

 

12.	The three-step process that creates energy in the sun is called the helium helium chain. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 52.02 Subtopic: Interior Processes for the Sun Subtopic: Proton-proton Chain Topic: The Sun Unit: 52

Sunspots appear dark because

 

13.	Sunspots appear dark because A. they have a different composition than the surrounding surface of the Sun.   B. they are holes in the photosphere of the Sun.   C. they are cooler than the surrounding surface of the Sun.   D. light is prevented from escaping because of the strong magnetic field.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Easy Gradable: automatic Part 4 Section: 53.01 Subtopic: Solar Magnetic Field Subtopic: Sunspots and Sunspot Cycle Topic: The Sun Unit: 53

The sunspot cycle going from low point to l…

 

14.	The sunspot cycle going from low point to low point in its cycle takes about ______. A. 7 yrs   B. 25 yrs   C. 11 yrs   D. 3 yrs The cycle is more complicated because if you go from polarity of the spots back to polarity of the spots it is 22 years.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 53.03 Subtopic: Sunspots and Sunspot Cycle Topic: The Sun Unit: 53

Sunspots are a ________ storm on the sun.

 

15.	Sunspots are a ________ storm on the sun. A. magnetic S B. wind   C. tornado   D. hurricane Can be 1000s of times Earth’s magnetism.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 53.01 Subtopic: Solar Magnetic Field Subtopic: Sunspots and Sunspot Cycle Topic: The Sun Unit: 53

Huge plumes in the lower chromosphere of th…

 

16.	Huge plumes in the lower chromosphere of the sun following magnetic lines are called _____. A. flares   B. spicules   C. prominences   D. sunspots Can dwarf the Earth in size.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 53.02 Subtopic: Solar Activity Subtopic: Solar Magnetic Field Topic: The Sun Unit: 53

Sunspots can be 4500 K.

 

17.	Sunspots can be 4500 K. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 53.01 Subtopic: Sunspots and Sunspot Cycle Topic: The Sun Unit: 53

A flare is exactly the same as a sunspot.

 

18.	A flare is exactly the same as a sunspot. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 53.02 Subtopic: Solar Activity Topic: The Sun Unit: 53

The baseline used in measuring the parallax…

 

19.	The baseline used in measuring the parallax of stars is A. 1 arc second   B. 2 AU   C. 1 parsec   D. 2 parsecs

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 54.02 Subtopic: Measuring Distance to Stars Subtopic: Parallax Topic: History of Astronomy Topic: Properties of Stars Unit: 54

The motion along the line of sight is common…

 

20.	The motion along the line of sight is commonly called _____. A. proper motion   B. transverse velocity   C. radial motion   D. space motion Measured by Doppler Effect.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 54.04 Subtopic: Stellar Motion Topic: Properties of Stars Unit: 54

This is the motion of the star with respect …

 

21.	This is the motion of the star with respect to the background stars: A. proper motion   B. transverse velocity   C. radial motion   D. space motion Very hard to detect.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 54.04 Subtopic: Stellar Motion Topic: Properties of Stars Unit: 54

The Earth-sun distance is known as a(an) ___…

 

22.	The Earth-sun distance is known as a(an) ______. A. astronomical unit   B. parsec   C. light year   D. kilometer About 150 million km.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 54.01 Subtopic: Astronomical Unit (AU) Subtopic: Measuring Distance to Stars Topic: Language of Astronomy Topic: Properties of Stars Unit: 54

The nearest star to the Earth is Proxima Cen…

 

23.	The nearest star to the Earth is Proxima Centauri. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 54.03 Subtopic: Measuring Distance to Stars Topic: Properties of Stars Unit: 54

Hipparchus used triangulation to estimate th…

 

24.	Hipparchus used triangulation to estimate the distance to the moon. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 54.01 Subtopic: Historical: Distances and Sizes of the Sun and Moon Subtopic: Measuring Distance to Stars Topic: History of Astronomy Topic: Properties of Stars Unit: 54

The total amount of energy that a star emits…

 

25.	The total amount of energy that a star emits is called its ______. A. astro energy   B. luminosity   C. apparent magnitude   D. apparent brightness Usually given in sun units for comparison.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 55.01 Subtopic: Luminosity, Brightness, and the Inverse-square Law Topic: Properties of Stars Unit: 55

The brightness of a star at 10 parsecs is ca…

 

26.	The brightness of a star at 10 parsecs is called the star’s ______. A. apparent brightness   B. apparent luminosity   C. absolute magnitude   D. parsec magnitude Apparent brightness of the star at 10 parsecs or 32.6 light years.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 55.04 Subtopic: Luminosity, Brightness, and the Inverse-square Law Subtopic: Magnitude System Topic: Properties of Stars Unit: 55

The person who first started the magnitude s…

 

27.	The person who first started the magnitude scale for stars was _____. A. Kepler   B. Aristotle   C. Hipparchus   D. Copernicus Started in 140 BCE.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 55.04 Subtopic: Magnitude System Topic: Properties of Stars Unit: 55

Star A has an apparent magnitude of 5. …

 

28.	Star A has an apparent magnitude of 5.  Star B has an apparent magnitude of 3. A. Star A is 2.512 times brighter than star B.   B. Star A is 6.310 times brighter than star B.   C. Star B is 2.512 times brighter than star A.   D. Star B is 6.310 times brighter than star A.

 

Accessibility: Keyboard Navigation Bloom’s Level: 3. Apply Difficulty: Medium Gradable: automatic Part 4 Section: 55.04 Subtopic: Luminosity, Brightness, and the Inverse-square Law Subtopic: Magnitude System Topic: Properties of Stars Unit: 55

Absolute magnitude is the brightness of a s…

 

29.	Absolute magnitude is the brightness of a star in the night sky. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 55.04 Subtopic: Luminosity, Brightness, and the Inverse-square Law Subtopic: Magnitude System Topic: Properties of Stars Unit: 55

Luminosity is expressed as watts or wattage…

 

30.	Luminosity is expressed as watts or wattage. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 55.01 Subtopic: Luminosity, Brightness, and the Inverse-square Law Topic: Properties of Stars Unit: 55

An O star is about _______ degrees surface t…

 

31.	An O star is about _______ degrees surface temperature. A. 3000 K   B. 6000 K   C. 12,000 K   D. 30,000 K O stars are above 25,000.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 56.03 Subtopic: Stellar Spectra Topic: Properties of Stars Unit: 56

The hotter the star, the bluer it is.  …

 

32.	The hotter the star, the bluer it is.  This is a consequence of _______. A. Planck’s Law   B. Wien’s Law   C. Stefan’s Law   D. Kepler’s Law The hotter the bluer, the cooler the redder.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 56.02 Subtopic: Stellar Spectra Subtopic: Temperature, Wien’s Law, and the Stefan-Boltzmann Law Topic: Properties of Stars Unit: 56

M stars have a surface temperature of …

 

33.	M stars have a surface temperature of about ______ . A. 3000 K   B. 6000 K   C. 12,000 K   D. 30,000 K Many absorption lines are in the spectrum.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 56.03 Subtopic: Stellar Spectra Subtopic: Temperature, Wien’s Law, and the Stefan-Boltzmann Law Topic: Properties of Stars Unit: 56

The Balmer lines in a spectrum are the sign…

 

34.	The Balmer lines in a spectrum are the signature of A. hydrogen   B. helium   C. calcium   D. mercury

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 56.04 Subtopic: Stellar Spectra Topic: Properties of Stars Unit: 56

Our sun is a G star.

 

35.	Our sun is a G star. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 56.03 Subtopic: Stellar Spectra Topic: Properties of Stars Unit: 56

The star temperature classification that is…

 

36.	The star temperature classification that is just cooler than the sun is the F star. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 56.03 Subtopic: Stellar Spectra Topic: Properties of Stars Unit: 56

This type of binary star system is detected…

 

37.	This type of binary star system is detected by using the Doppler shift: A. eclipsing binary   B. spectral binary   C. visual binary   D. apparent double star

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Easy Gradable: automatic Part 4 Section: 57.01 Subtopic: Binary Stars Topic: Properties of Stars Unit: 57

Binary stars are used to measure _____.

 

38.	Binary stars are used to measure _____. A. temperature   B. distance   C. mass Used to measure the most important item of a star.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 57.00 Subtopic: Binary Stars Topic: Properties of Stars Unit: 57

The ______ is the point between two stars th…

 

39.	The ______ is the point between two stars that they revolve around. A. center of mass   B. center of light   C. center of revolution   D. center of rotation Can be hard to determine if plane of orbits are not known.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 57.03 Subtopic: Binary Stars Topic: Properties of Stars Unit: 57

Stars whose absorption lines move back and f…

 

40.	Stars whose absorption lines move back and forth are called ______. A. visual binaries   B. eclipsing binaries   C. astrometry binaries   D. Spectroscopic binaries The lines shift to give indication there are two stars.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 57.02 Subtopic: Binary Stars Topic: Properties of Stars Unit: 57

Apparent double stars are two stars go…

 

41.	Apparent double stars are two stars going around each other. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 57.02 Subtopic: Binary Stars Topic: Properties of Stars Unit: 57

40 percent of visible stars are binary syste…

 

42.	40 percent of visible stars are binary systems. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 57.00 Subtopic: Binary Stars Topic: Properties of Stars Unit: 57

If you know a star’s temperature and use the Stefan-Boltzmann law you can find ______.

 

43.	If you know a star’s temperature and use the Stefan-Boltzmann law you can find ______. A. luminosity   B. distance   C. size   D. mass Luminosity is the first to be figured by the law.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 58.03 Subtopic: Temperature, Wien’s Law, and the Stefan-Boltzmann Law Topic: Properties of Stars Unit: 58

A technique to find diameters of stars using…

 

44.	A technique to find diameters of stars using short exposures is called A. luminosity measurements.   B. speckle interferometry.   C. mass interferometry.   D. parallax. Used for the largest stars.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 58.01 Subtopic: H-R Diagram Subtopic: Temperature, Wien’s Law, and the Stefan-Boltzmann Law Topic: Properties of Stars Unit: 58

Using the Stefan-Boltzmann law to find lumin…

 

45.	Using the Stefan-Boltzmann law to find luminosity requires _______. A. radius and temperature   B. velocity and distance   C. brightness and radius   D. period and temperature The formula is the using areas which is radius and temperature in K to the 4th power

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 58.03 Subtopic: Temperature, Wien’s Law, and the Stefan-Boltzmann Law Topic: Properties of Stars Unit: 58

The technique of combining the light from t…

 

46.	The technique of combining the light from two or more smaller telescopes to obtain an image that is equivalent to that of a much larger telescope is called A. speckle imaging   B. adaptive optics   C. interferometry   D. angular resolution

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 58.01 Subtopic: Collecting and Filtering Light Topic: Telescopes Unit: 58

Eclipsing binaries cannot be used to measur…

 

47.	Eclipsing binaries cannot be used to measure masses of stars. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 58.02 Subtopic: Binary Stars Topic: Properties of Stars Unit: 58

New interferometry techniques have mea…

 

48.	New interferometry techniques have measured many sizes of stars far from Earth. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 58.01 Subtopic: Collecting and Filtering Light Topic: Telescopes Unit: 58

A plot of temperature vs. luminosity for st…

 

49.	A plot of temperature vs. luminosity for stars is known as the ______. A. Einstein graph   B. HR diagram   C. mass graph   D. luminosity graph Hertzsprung and Russell did independently.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 59.00 Subtopic: H-R Diagram Topic: Properties of Stars Unit: 59

_____ of stars will lie on the main sequence…

 

50.	_____ of stars will lie on the main sequence. A. 45%   B. 50%   C. 75%   D. 90% Most stars are normal stars.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 59.01 Subtopic: H-R Diagram Subtopic: Main Sequence Stars Topic: Properties of Stars Unit: 59

__________ are small bright dead cores of s…

 

51.	__________ are small bright dead cores of stars like our sun. A. Neutron stars   B. Black holes   C. White holes   D. White dwarfs Our sun will be one in 5 billion years.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 59.01 Subtopic: Giants and Dwarfs Subtopic: H-R Diagram Subtopic: White Dwarfs Topic: Properties of Stars Topic: Stellar Remnants Unit: 59

A main sequence star has a luminosity class…

 

52.	A main sequence star has a luminosity class of A. III   B. IV   C. V   D. Ib

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 59.03 Subtopic: H-R Diagram Topic: Properties of Stars Unit: 59

Most stars are not on the main sequence.

 

53.	Most stars are not on the main sequence. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 59.01 Subtopic: H-R Diagram Subtopic: Main Sequence Stars Topic: Properties of Stars Unit: 59

Stars on the main sequence that are more lum…

 

54.	Stars on the main sequence that are more luminous are smaller in size. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Easy Gradable: automatic Part 4 Section: 59.01 Subtopic: H-R Diagram Subtopic: Main Sequence Stars Topic: Properties of Stars Unit: 59

Stars that are forming are called ______.

 

55.	Stars that are forming are called ______. A. protostars   B. newbies   C. protoplanets   D. proto bodies Our sun was one and then formed our solar system.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 60.02 Subtopic: Star Formation Topic: Stellar Evolution Unit: 60

Stars that pulsate in and out are called ___…

 

56.	Stars that pulsate in and out are called ______. A. protostars   B. protoplanets   C. variable stars   D. pulsating clouds Many types and reasons for the pulsations.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 60.02 Subtopic: Mechanics of Variable Stars Subtopic: Period-luminosity Relation for Variable Stars Topic: Stellar Evolution Unit: 60

A cloud of ejected gas surrounding a dying …

 

57.	A cloud of ejected gas surrounding a dying star is called a ______. A. planetary nebula   B. star cloud   C. reflection nebula   D. absorption nebula Our sun will have this at death.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 60.02 Subtopic: Death of Low-mass Stars Topic: Stellar Evolution Unit: 60

The proper sequence of stages in the life o…

 

58.	The proper sequence of stages in the life of a star is A. red giant, protostar, main sequence.   B. protostar, red giant, main sequence.   C. red giant, main sequence, protostar.   D. protostar, main sequence, red giant.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 60.02 Subtopic: High-mass Stellar Evolution Subtopic: Low-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 60

Our sun will die as a white dwarf.

 

59.	Our sun will die as a white dwarf. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 60.02 Subtopic: Death of Low-mass Stars Subtopic: White Dwarfs Topic: Stellar Evolution Topic: Stellar Remnants Unit: 60

Stellar computer models help us trace a star…

 

60.	Stellar computer models help us trace a star’s life from birth to death. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 60.01 Subtopic: High-mass Stellar Evolution Subtopic: Low-mass Stellar Evolution Topic: Stellar Evolution Unit: 60

The best place to find star formation …

 

61.	The best place to find star formation is in a ______. A. nebula   B. molecular cloud   C. supernova   D. nova Molecular clouds are dense enough to make stars.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 61.01 Subtopic: Star Formation Topic: Stellar Evolution Unit: 61

When a new star ejects gas in opposite dire…

 

62.	When a new star ejects gas in opposite directions, this is known as _______. A. tri flow   B. ejection flow   C. bipolar flow   D. opposite flow Older stars can do this too.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 61.02 Subtopic: Star Formation Topic: Stellar Evolution Unit: 61

Small dark areas in gas clouds that may be p…

 

63.	Small dark areas in gas clouds that may be prime stellar formation areas are called ______. A. Dark Globules   B. Bok Globules   C. Proto Globules   D. Molecular Globules Named after Bart Bok.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 61.01 Subtopic: Star Formation Topic: Stellar Evolution Unit: 61

Objects with masses between about 0.08 and …

 

64.	Objects with masses between about 0.08 and 0.016 times the mass of the Sun are called A. white dwarfs.   B. red dwarfs.   C. yellow dwarfs.   D. brown dwarfs.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 61.04 Subtopic: Low-mass Stellar Evolution Subtopic: Star Formation Topic: Stellar Evolution Unit: 61

A star’s first energy source comes from gravitational collapse.

 

65.	A star’s first energy source comes from gravitational collapse. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 61.02 Subtopic: Star Formation Topic: Stellar Evolution Unit: 61

The lower limit for a normal star is about …

 

66.	The lower limit for a normal star is about .1 solar masses. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 61.04 Subtopic: Main Sequence Stellar Lifetimes and Structures Subtopic: Star Formation Topic: Stellar Evolution Unit: 61

Stars with a core temperature in excess of …

 

67.	Stars with a core temperature in excess of 20 million K probably have this hydrogen fusion type: A. proton-proton   B. helium   C. iron   D. CNO Our sun does not use this much.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 62.02 Subtopic: High-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Subtopic: Star Formation Topic: Stellar Evolution Unit: 62

The sun is expected to live about ____ years…

 

68.	The sun is expected to live about ____ years. A. 10 million   B. 10 trillion   C. 10 billion   D. 10 thousand Based on current theory of stellar evolution.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 62.03 Subtopic: Low-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 62

Stars with less than about 0.4 times the ma…

 

69.	Stars with less than about 0.4 times the mass of the Sun are probably A. fully functional.   B. fully convective.   C. fully radiative.   D. convective only in the core.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 60.01 Subtopic: Low-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 62

The stars with the shortest main sequence l…

 

70.	The stars with the shortest main sequence lifetimes will be A. stars like the Sun.   B. the lowest mass stars.   C. the highest mass stars.   D. the coolest stars.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 62.03 Subtopic: High-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 62

Very massive stars live relatively short liv…

 

71.	Very massive stars live relatively short lives. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 62.03 Subtopic: High-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 62

The Earth’s history shows temperature has …

 

72.	The Earth’s history shows temperature has remained stable due to constant increases in greenhouses gases. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 62.04 Subtopic: Low-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 62

As core helium builds up it pushes the hydr…

 

73.	As core helium builds up it pushes the hydrogen into a _______. A. core   B. atmosphere   C. wind   D. shell The hydrogen shell is presently in our sun.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 63.01 Subtopic: Low-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 63

As the sun’s core heats up, the helium will begin to fuse in a process called __________.

 

74.	As the sun’s core heats up, the helium will begin to fuse in a process called __________. A. triple alpha fusion   B. neutron fusion   C. electron fusion   D. neutrino fusion Three helium is fused into one carbon.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 63.02 Subtopic: Low-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 63

When electrons are forced very close t…

 

75.	When electrons are forced very close together, they can stop collapse of a star.  This is known as ________. A. neutral degeneracy   B. electron degeneracy   C. black hole degeneracy   D. red giant degeneracy Stops the star at a white dwarf stage.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 63.03 Subtopic: Death of High-mass Stars Subtopic: Death of Low-mass Stars Subtopic: Degeneracy and the Chandrasekhar Limit Subtopic: White Dwarfs Topic: Stellar Evolution Topic: Stellar Remnants Unit: 63

The Sun will ascend into the giant region o…

 

76.	The Sun will ascend into the giant region of the HR diagram. A. once.   B. twice.   C. three times.   D. four times.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 63.04 Subtopic: Death of Low-mass Stars Subtopic: Low-mass Stellar Evolution Topic: Stellar Evolution Unit: 63

Stars spend as much time as a giant as a ma…

 

77.	Stars spend as much time as a giant as a main sequence star. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 63.02 Subtopic: High-mass Stellar Evolution Subtopic: Low-mass Stellar Evolution Topic: Stellar Evolution Unit: 63

High mass stars traverse the HR diagram hori…

 

78.	High mass stars traverse the HR diagram horizontally as they evolve. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Hard Gradable: automatic Part 4 Section: 63.04 Subtopic: High-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 63

Cepheids have pulsation periods in the range of _____.

 

79.	Cepheids have pulsation periods in the range of _____. A. 1-700 hours   B. 1-70 days   C. 1-70 minutes   D. 1-70 hours Some can go to 100 days but not very common.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 64.02 Subtopic: Mechanics of Variable Stars Subtopic: Period-luminosity Relation for Variable Stars Topic: Stellar Evolution Unit: 64

Mira variable stars change their brightness…

 

80.	Mira variable stars change their brightness by A. carbon fusion.   B. hydrogen fusion.   C. molecules in cool atmosphere.   D. PP reaction. The period Mira variable is in 100s of days and they have irregular period and changes in brightness.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 64.02 Subtopic: Mechanics of Variable Stars Subtopic: Period-luminosity Relation for Variable Stars Topic: Stellar Evolution Unit: 64

We use this to help measure the distance to …

 

81.	We use this to help measure the distance to variable stars: A. period-mass   B. period-size   C. period luminosity   D. mass-distance Can be used for many types of variable stars but Cepheid’s are the most important.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 64.03 Subtopic: Mechanics of Variable Stars Subtopic: Period-luminosity Relation for Variable Stars Topic: Stellar Evolution Unit: 64

The layer in a variable that star that is r…

 

82.	The layer in a variable that star that is responsible for alternately absorbing and releasing the energy flowing from the center of the star is made up of A. fusing hydrogen.   B. molecules of metal oxides.   C. fusing helium.   D. partially ionized helium.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 64.02 Subtopic: Mechanics of Variable Stars Subtopic: Period-luminosity Relation for Variable Stars Topic: Stellar Evolution Unit: 64

Mira variables have a period of about a day.

 

83.	Mira variables have a period of about a day. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 65.02 Subtopic: Mechanics of Variable Stars Topic: Stellar Evolution Unit: 64

Using the period of bright stars and the sta…

 

84.	Using the period of bright stars and the standard candle formula you can measure distances to galaxies at the edge of the universe. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 64.03 Subtopic: Period-luminosity Relation for Variable Stars Topic: Stellar Evolution Unit: 64

Stars like our sun will leave this type of r…

 

85.	Stars like our sun will leave this type of remnant after they die: A. neutron star   B. black hole   C. T-Tauri   D. white dwarf Stars from 0.1 to 1.44 solar mass will become this.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 65.01 Subtopic: Death of Low-mass Stars Subtopic: Low-mass Stellar Evolution Subtopic: White Dwarfs Topic: Stellar Evolution Topic: Stellar Remnants Unit: 65

Helium core fusion in the Sun will last abo…

 

86.	Helium core fusion in the Sun will last about _____ years. A. 10 million   B. 1 million   C. 100 million   D. 1000 million Carbon fusion needs this high of a temperature to fuse large atoms.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 65.01 Subtopic: Death of Low-mass Stars Subtopic: Low-mass Stellar Evolution Topic: Stellar Evolution Unit: 65

Stars like our sun will in their final phas…

 

87.	Stars like our sun will in their final phases become A. RR Lyra variable.   B. Mira variable.   C. Cepheid variable.   D. T-Tauri variable. This is a red light with long irregular periods.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 65.01 Subtopic: Low-mass Stellar Evolution Topic: Stellar Evolution Unit: 65

The process that generates energy in a whit…

 

88.	The process that generates energy in a white dwarf is A. the fusion of hydrogen into helium.   B. the fusion of helium into carbon.   C. the helium flash.   D. nonexistent.  A white dwarf no longer generates energy.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 65.04 Subtopic: White Dwarfs Topic: Stellar Remnants Unit: 65

Eventually a white dwarf cools to a black dw…

 

89.	Eventually a white dwarf cools to a black dwarf. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 65.04 Subtopic: White Dwarfs Topic: Stellar Remnants Unit: 65

A low mass star is usually less than 12 sola…

 

90.	A low mass star is usually less than 12 solar masses. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 65.00 Subtopic: High-mass Stellar Evolution Subtopic: Low-mass Stellar Evolution Topic: Stellar Evolution Unit: 65

A supernova type ___ is from a white dwarf e…

 

91.	A supernova type ___ is from a white dwarf explosion. A. II   B. IIa   C. Ia   D. IIb A white dwarf exploding from gases from its companion.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 66.03 Subtopic: Degeneracy and the Chandrasekhar Limit Subtopic: Type Ia Supernovas Subtopic: White Dwarfs Topic: Stellar Remnants Unit: 66

Spiraling gas around an object is known as a…

 

92.	Spiraling gas around an object is known as a(an) ____. A. accretion disk   B. bipolar jets   C. Roche lobe   D. nova Can produce 10 times more energy as fusion.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 66.01 Subtopic: Novas Subtopic: Observation of Black Holes Topic: Stellar Remnants Unit: 66

The Chandrasekhar limit is about

 

93.	The Chandrasekhar limit is about A. 4.1 times the mass of the Sun.   B. 1.4 times the mass of the Sun.   C. 3 times the mass of the Sun.   D. 14 times the mass of the Sun.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 66.02 Subtopic: Degeneracy and the Chandrasekhar Limit Topic: Stellar Remnants Unit: 66

A white dwarf can explode in a supernova if…

 

94.	A white dwarf can explode in a supernova if it A. acquires enough extra mass.   B. gets hot enough.   C. spins fast enough.   D. has a high enough velocity.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 66.03 Subtopic: Degeneracy and the Chandrasekhar Limit Subtopic: Type Ia Supernovas Topic: Stellar Remnants Unit: 66

A recurrent nova is usually in a binar…

 

95.	A recurrent nova is usually in a binary star system. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 66.01 Subtopic: Novas Topic: Stellar Remnants Unit: 66

Type II supernovas are white dwarf explosio…

 

96.	Type II supernovas are white dwarf explosions. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 66.03 Subtopic: Death of High-mass Stars Subtopic: Type Ia Supernovas Topic: Stellar Evolution Topic: Stellar Remnants Unit: 66

High mass stars are those above ___ solar ma…

 

97.	High mass stars are those above ___ solar masses. A. 5   B. 1.4   C. 3   D. 8 Stars retain this much mass after they spew much of it off.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 67.00 Subtopic: Death of High-mass Stars Subtopic: High-mass Stellar Evolution Subtopic: Neutron Stars Topic: Stellar Evolution Topic: Stellar Remnants Unit: 67

The production of heavy atoms from light ato…

 

98.	The production of heavy atoms from light atoms inside of a star is called ___. A. proton-proton cycle   B. CNO cycle   C. nucleosynthesis   D. helium flash Was discovered in the 1950s.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 67.02 Subtopic: Death of High-mass Stars Subtopic: Nucleosynthesis Topic: Stellar Evolution Unit: 67

A type ___ supernova is a single massive sta…

 

99.	A type ___ supernova is a single massive star exploding. A. Ia   B. II   C. III   D. IV 1b and 1c are less common single star explosions.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 67.03 Subtopic: Death of High-mass Stars Topic: Stellar Evolution Unit: 67

The last fusion stage in a massive star is

 

100.	The last fusion stage in a massive star is A. iron to silicon   B. oxygen to silicon   C. neon to oxygen   D. silicon to iron

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 67.01 Subtopic: Death of High-mass Stars Subtopic: Nucleosynthesis Topic: Stellar Evolution Unit: 67

The sun will become a supernova.

 

101.	The sun will become a supernova. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 67.03 Subtopic: Death of High-mass Stars Subtopic: Death of Low-mass Stars Topic: Stellar Evolution Unit: 67

Large massive stars create a series of…

 

102.	Large massive stars create a series of nested shells of fusion as they age. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 67.02 Subtopic: High-mass Stellar Evolution Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Stellar Evolution Unit: 67

The process by which a spinning object…

 

103.	The process by which a spinning object collapses and spins faster is called _____. A. conservation of energy   B. conservation of torque   C. inertia   D. conservation of angular momentum Similar to an ice skater.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 68.01 Subtopic: Neutron Stars Subtopic: Pulsars Topic: Stellar Remnants Unit: 68

Charges accelerating along a magnetic field …

 

104.	Charges accelerating along a magnetic field give off _______. A. synchrotron radiation   B. thermal radiation   C. gamma rays   D. X-rays A non-thermal radiation from spiraling electrons.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 68.02 Subtopic: Neutron Stars Subtopic: Pulsars Topic: Stellar Remnants Unit: 68

A neutron star is typically about ____ acros…

 

105.	A neutron star is typically about ____ across. A. 600 km   B. 16 km   C. 1000 km   D. 1 km About 10 miles across.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 68.02 Subtopic: Neutron Stars Topic: Stellar Remnants Unit: 68

A pulsar is

 

106.	A pulsar is A. a type of variable star.   B. a rapidly spinning neutron star.   C. an accretion disk around a white dwarf.   D. a beacon of an alien civilization.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 68.01 Subtopic: Neutron Stars Subtopic: Pulsars Topic: Stellar Remnants Unit: 68

 

The lengthening time of the pulsars pulsation…

 

107.	The lengthening time of the pulsars pulsations is called its spinup time. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 68.02 Subtopic: Neutron Stars Subtopic: Pulsars Topic: Stellar Remnants Unit: 68

Some neutron stars have periods in milliseco…

 

108.	Some neutron stars have periods in milliseconds. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 68.02 Subtopic: Pulsars Topic: Stellar Remnants Unit: 68

The curvature of space under general relativ…

 

109.	The curvature of space under general relativity can be caused by _____. A. mass   B. light   C. heat   D. gamma rays Mass tells space how to curve and space tells matter where to go.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 69.02 Subtopic: General and Special Relativity Subtopic: Warped Space Near a Black Hole Topic: Gravity and Motion Topic: Stellar Remnants Unit: 69

Particles that exist in tiny energy fluctuat…

 

110.	Particles that exist in tiny energy fluctuations and are then gone are called _____. A. black hole particles   B. virtual particles   C. relative particles   D. non-existent particles Matter and antimatter interactions can cause these.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 69.03 Subtopic: Black Holes Subtopic: Observation of Black Holes Topic: Stellar Remnants Unit: 69

If the Sun were to become a black hole, the…

 

111.	If the Sun were to become a black hole, the Earth and other planets would A. be pulled into the black hole.   B. move into orbits closer to the black hole than they were to the Sun.   C. fly off into space.   D. continue orbiting as they do now.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 69.02 Subtopic: Black Holes Topic: Stellar Remnants Unit: 69

The shift of light toward the red end of th…

 

112.	The shift of light toward the red end of the spectrum when it is near a black hole is caused by _____. A. gravitational red shift   B. virtual shift   C. general relativity shift   D. radial shift Large mass objects curve space and cause this effect.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 69.02 Subtopic: Black Holes Subtopic: Observation of Black Holes Topic: Stellar Remnants Unit: 69

One of the best candidates for a black hole …

 

113.	One of the best candidates for a black hole is Cygnus X-1. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 69.03 Subtopic: Black Holes Subtopic: Observation of Black Holes Topic: Stellar Remnants Unit: 69

A singularity is the collapse of a black hol…

 

114.	A singularity is the collapse of a black hole to a point. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 69.01 Subtopic: Black Holes Topic: Stellar Remnants Unit: 69

Star clusters provide a way to test stellar…

 

115.

Star clusters provide a way to test stellar evolution theory because A. all the stars in a cluster are the same age and the same type.   B. all the stars in a cluster are different ages and come in many different types.   C. all the stars in a cluster are the same age and come in many different types.   D. all the stars in a cluster are different ages and the same type.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 70.02 Subtopic: Clusters as Tests for Evolutionary Models Topic: Stellar Evolution Unit: 70

When looking at stars, the brightest are th…

 

116.	When looking at stars, the brightest are the easiest to study. This is called A. bright effect.   B. selection effect.   C. mass effect.   D. radius effect. Go out at night and look up. The easiest to see are largest most massive stars, as they are the easiest to see and study.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 70.03 Subtopic: Clusters as Tests for Evolutionary Models Topic: Stellar Evolution Unit: 70

This type of cluster has upwards of 1 milli…

 

117.	This type of cluster has upwards of 1 million stars: A. closed cluster   B. globular cluster   C. open cluster   D. stellar association Found in the halo of our galaxy.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 70.01 Subtopic: Clusters as Tests for Evolutionary Models Subtopic: Star Clusters Topic: Stellar Evolution Topic: The Milky Way Galaxy Unit: 70

A group of stars that is few hundred light …

 

118.	A group of stars that is few hundred light years across and contains about 100 stars is likely a ______. A. closed cluster   B. globular cluster   C. open cluster   D. stellar association Our sun may belong to one of these.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 70.01 Subtopic: Clusters as Tests for Evolutionary Models Subtopic: Star Clusters Topic: Stellar Evolution Topic: The Milky Way Galaxy Unit: 70

The Pleiades are most likely an open cluster…

 

119.	The Pleiades are most likely an open cluster. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 70.01 Subtopic: Star Clusters Topic: The Milky Way Galaxy Unit: 70

The age of a star cluster can be determined…

 

120.	The age of a star cluster can be determined by its turnoff point. TRUE

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 70.02 Subtopic: Clusters as Tests for Evolutionary Models Topic: Stellar Evolution Unit: 70

Models of hydrostatic equilibrium …

 

121.	Models of hydrostatic equilibrium have been confirmed by A. studying the rising and falling of the photosphere of the sun.   B. sending probes to the interior of the sun.   C. studying the temperature of the Oort cloud around the sun.   D. studying gravitational waves emitted by the sun.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Medium Gradable: automatic Part 4 Section: 51.03 Subtopic: Interior Processes for the Sun Subtopic: Solar Interior Structure Topic: The Sun Unit: 51

We can measure the temperature of a star by

 

122.	We can measure the temperature of a star by A. determining its spectral type.   B. observing it in a binary.   C. measuring its Doppler shift.   D. imaging its photosphere.

 

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand Difficulty: Easy Gradable: automatic Part 4 Section: 56.02 Subtopic: Stellar Spectra Subtopic: Temperature, Wien’s Law, and the Stefan-Boltzmann Law Topic: Properties of Stars Unit: 56

Molecular absorption lines indicate a …

 

123.	Molecular absorption lines indicate a star is which of the following spectral types? A. O   B. B   C. G   D. L

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 56.04 Subtopic: Stellar Spectra Topic: Properties of Stars Unit: 56

Measuring the orbital period and semimajor …

 

124.	Measuring the orbital period and semimajor axis of a binary star will give us each star’s own mass. FALSE

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 57.02 Subtopic: Binary Stars Topic: Properties of Stars Unit: 57

An eclipsing binary can tell us …

 

125.	An eclipsing binary can tell us each star’s radius if we observe A. the eclipse duration and orbital speed.   B. the relative darkness of the two eclipses.   C. the frequency of eclipses.   D. the angular separation between the stars.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 58.02 Subtopic: Binary Stars Topic: Properties of Stars Unit: 58

Brown dwarfs are too small …\

 

126.	Brown dwarfs are too small to fuse any elements in their cores. FALSE They can fuse deuterium or lithium.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 61.04 Subtopic: Low-mass Stellar Evolution Topic: Properties of Stars Unit: 61

Before it leaves the main …

 

127.	Before it leaves the main sequence, the Sun’s luminosity will A. remain the same   B. double   C. reduce by half   D. reduce by 10%

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 62.04 Subtopic: Main Sequence Stellar Lifetimes and Structures Topic: Properties of Stars Unit: 62

As soon as any star’s …

 

128.	As soon as any star’s core becomes degenerate, it collapses into a black hole. FALSE A degenerate core is already compressed as much as it can be. Black holes only form from massive stars.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Easy Gradable: automatic Part 4 Section: 63.03 Subtopic: Degeneracy and the Chandrasekhar Limit Topic: Stellar Remnants Unit: 63

A white dwarf will stay hotter than the sun for about

 

129.	A white dwarf will stay hotter than the sun for about A. 100,000 years   B. 1,000,000 years   C. 10,000,000 years   D. 1,000,000,000 years

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 65.04 Subtopic: White Dwarfs Topic: Stellar Remnants Unit: 65

Type Ia supernova have which …

 

130.	Type Ia supernova have which of the following properties? A. The spectra contain strong hydrogen lines.   B. The spectra contain strong silicon lines.   C. They cannot occur in binary stars.   D. They produce an unpredictable light curve.

 

Accessibility: Keyboard Navigation Bloom’s Level: 1. Remember Difficulty: Medium Gradable: automatic Part 4 Section: 65.04 Subtopic: Type Ia Supernovas Topic: Stellar Remnants Unit: 66

 

 

Part 4 Test Bank – Stars and Stellar Evolution Summary

Category	# of Questions
Accessibility: Keyboard Navigation	130
Bloom’s Level: 1. Remember	99
Bloom’s Level: 2. Understand	30
Bloom’s Level: 3. Apply	1
Difficulty: Easy	62
Difficulty: Hard	1
Difficulty: Medium	67
Gradable: automatic	130
Part 4	130
Section:  51.02	1
Section:  51.03	3
Section:  51.04	2
Section:  51.05	1
Section:  52.01	2
Section:  52.02	3
Section:  52.03	1
Section:  53.01	3
Section:  53.02	2
Section:  53.03	1
Section:  54.01	2
Section:  54.03	1
Section:  54.04	2
Section:  55.01	2
Section:  55.04	4
Section:  56.02	2
Section:  56.03	4
Section:  56.04	2
Section:  57.00	2
Section:  57.01	1
Section:  57.02	3
Section:  57.03	1
Section:  58.01	3
Section:  58.02	2
Section:  58.03	2
Section:  59.00	1
Section:  59.01	4
Section:  59.03	1
Section:  60.01	2
Section:  60.02	5
Section:  61.01	2
Section:  61.02	2
Section:  61.04	3
Section:  62.02	1
Section:  62.03	3
Section:  62.04	2
Section:  63.01	1
Section:  63.02	2
Section:  63.03	2
Section:  63.04	2
Section:  64.02	3
Section:  64.03	2
Section:  65.00	1
Section:  65.01	3
Section:  65.04	4
Section:  66.01	2
Section:  66.02	1
Section:  66.03	3
Section:  67.00	1
Section:  67.01	1
Section:  67.02	2
Section:  67.03	2
Section:  68.01	2
Section:  68.02	4
Section:  69.01	1
Section:  69.02	3
Section:  69.03	2
Section:  70.01	3
Section:  70.02	2
Section:  70.03	1
Section: 54.02	2
Section: 65.02	1
Subtopic: Astronomical Unit (AU)	1
Subtopic: Binary Stars	9
Subtopic: Black Holes	5
Subtopic: Clusters as Tests for Evolutionary Models	5
Subtopic: Collecting and Filtering Light	2
Subtopic: Death of High-mass Stars	7
Subtopic: Death of Low-mass Stars	7
Subtopic: Degeneracy and the Chandrasekhar Limit	5
Subtopic: General and Special Relativity	1
Subtopic: Giants and Dwarfs	1
Subtopic: H-R Diagram	7
Subtopic: High-mass Stellar Evolution	10
Subtopic: Historical: Distances and Sizes of the Sun and Moon	1
Subtopic: Interior Dynamics of the Sun	1
Subtopic: Interior Processes for the Sun	9
Subtopic: Low-mass Stellar Evolution	15
Subtopic: Luminosity, Brightness, and the Inverse-square Law	5
Subtopic: Magnitude System	4
Subtopic: Main Sequence Stars	3
Subtopic: Main Sequence Stellar Lifetimes and Structures	13
Subtopic: Measuring Distance to Stars	4
Subtopic: Mechanics of Variable Stars	6
Subtopic: Neutrinos	1
Subtopic: Neutron Stars	6
Subtopic: Novas	2
Subtopic: Nucleosynthesis	2
Subtopic: Observation of Black Holes	4
Subtopic: Parallax	1
Subtopic: Period-luminosity Relation for Variable Stars	6
Subtopic: Proton-proton Chain	5
Subtopic: Pulsars	5
Subtopic: Solar Activity	4
Subtopic: Solar Atmosphere	2
Subtopic: Solar Interior Structure	5
Subtopic: Solar Magnetic Field	5
Subtopic: Star Clusters	3
Subtopic: Star Formation	8
Subtopic: Stellar Motion	2
Subtopic: Stellar Spectra	8
Subtopic: Sunspots and Sunspot Cycle	5
Subtopic: Temperature, Wien’s Law, and the Stefan-Boltzmann Law	6
Subtopic: Type Ia Supernovas	4
Subtopic: Warped Space Near a Black Hole	1
Subtopic: White Dwarfs	8
Topic: Gravity and Motion	1
Topic: History of Astronomy	2
Topic: Language of Astronomy	1
Topic: Properties of Stars	40
Topic: Stellar Evolution	46
Topic: Stellar Remnants	28
Topic: Telescopes	2
Topic: The Milky Way Galaxy	3
Topic: The Sun	19
Unit: 51	7
Unit: 52	6
Unit: 53	6
Unit: 54	6
Unit: 55	6
Unit: 56	8
Unit: 57	7
Unit: 58	7
Unit: 59	6
Unit: 60	6
Unit: 61	7
Unit: 62	7
Unit: 63	7
Unit: 64	6
Unit: 65	7
Unit: 66	7
Unit: 67	6
Unit: 68	6
Unit: 69	6
Unit: 70	6