Question 1

The supernova event for a massive star that has lost a large amount of mass to a close binary companion ____.

Accepted Answer

A)  does not show hydrogen emission lines in the spectrum of the remnant 
B)  does not produce iron in the core before the explosion 
C)  is less luminous because the companion star absorbs most of the remnant material 
D)  is more likely to produce a neutron star than an isolated supernova 
E)  triggers a supernova in the binary companion 
A)  does not show hydrogen emission lines in the spectrum of the remnant 
B)  does not produce iron in the core before the explosion 
C)  is less luminous because the companion star absorbs most of the remnant material 
D)  is more likely to produce a neutron star than an isolated supernova 
E)  triggers a supernova in the binary companion

Question 2

High-mass stars evolve differently than medium-mass stars because they are able to fuse _______________.

Accepted Answer

The answer of High-mass stars evolve differently than medium-mass stars...

Question 3

Binary systems with pairs of stars orbiting each other are ____.

Accepted Answer

A)  common, and important for some types of stellar evolution 
B)  common, but not important for stellar evolution 
C)  uncommon, but important for some types of stellar evolution 
D)  uncommon, but not important for stellar evolution 
E)  very rare, but important for some types of stellar evolution 
A)  common, and important for some types of stellar evolution 
B)  common, but not important for stellar evolution 
C)  uncommon, but important for some types of stellar evolution 
D)  uncommon, but not important for stellar evolution 
E)  very rare, but important for some types of stellar evolution

Question 4

Fusion of degenerate hydrogen on the surface of a white dwarf causes temperatures to reach millions of degrees and the density tens of thousands the density of water releasing enough energy to blow the surface layers, resulting in a(n) _______________.

Accepted Answer

The answer of Fusion of degenerate hydrogen on the surface...

Question 5

A planetary nebula is visible due to ____.

Accepted Answer

A)  blackbody continuum radiation from the interstellar medium 
B)  line emission from the interstellar medium 
C)  scattering from dust grains ejected by a dying star 
D)  blackbody continuum radiation from a hot gas ejected by a dying star 
E)  line emission from ionized hydrogen gas ejected by a dying star 
A)  blackbody continuum radiation from the interstellar medium 
B)  line emission from the interstellar medium 
C)  scattering from dust grains ejected by a dying star 
D)  blackbody continuum radiation from a hot gas ejected by a dying star 
E)  line emission from ionized hydrogen gas ejected by a dying star

Question 6

The Algol paradox is concerned with ____.

Accepted Answer

A)  the difference between spherical and lobed appearance of planetary nebulae 
B)  production of heavy elements in supernova events 
C)  stars in close binaries that are lower mass, but more evolved, than their companion 
D)  the cooling of matter falling into a compact object in an accretion disk 
E)  the change in stellar winds from normal to superwind conditions 
A)  the difference between spherical and lobed appearance of planetary nebulae 
B)  production of heavy elements in supernova events 
C)  stars in close binaries that are lower mass, but more evolved, than their companion 
D)  the cooling of matter falling into a compact object in an accretion disk 
E)  the change in stellar winds from normal to superwind conditions

Question 7

What positive effect have supernovae had on the development of life on Earth?

Accepted Answer

A)  Supernovae are the main source of background radiation needed for mutations. 
B)  Chemical elements necessary for life can only be formed in supernovae. 
C)  The formation of the Sun was triggered by a supernova event. 
D)  Planets form by accretion of material in the expanding remnant of a supernova. 
E)  Neutrino bombardment was necessary to form the first simple proteins. 
A)  Supernovae are the main source of background radiation needed for mutations. 
B)  Chemical elements necessary for life can only be formed in supernovae. 
C)  The formation of the Sun was triggered by a supernova event. 
D)  Planets form by accretion of material in the expanding remnant of a supernova. 
E)  Neutrino bombardment was necessary to form the first simple proteins.

Question 8

The evolution of a medium-mass star like the Sun, when off of the main sequence, is ____.

Accepted Answer

A)  strongly affected by mass absorption from the interstellar medium 
B)  strongly affected by mass absorption from the corona 
C)  not affected by mass loss due to increased solar winds 
D)  strongly affected by mass loss due to increased solar winds 
E)  strongly affected by mass loss due to hydrogen fusion 
A)  strongly affected by mass absorption from the interstellar medium 
B)  strongly affected by mass absorption from the corona 
C)  not affected by mass loss due to increased solar winds 
D)  strongly affected by mass loss due to increased solar winds 
E)  strongly affected by mass loss due to hydrogen fusion

Question 9

The Chandrasekhar limit defines the ____.

Accepted Answer

A)  maximum mass of a white dwarf 
B)  lifetime of a white dwarf 
C)  temperature for carbon fusion 
D)  separation between medium- and high-mass stellar evolution 
E)  stellar surface temperature needed to ionize a planetary nebula 
A)  maximum mass of a white dwarf 
B)  lifetime of a white dwarf 
C)  temperature for carbon fusion 
D)  separation between medium- and high-mass stellar evolution 
E)  stellar surface temperature needed to ionize a planetary nebula

Question 10

A massive star can fuse more and more massive nuclei, but this process is limited by the fact that, at some point, an element that is produced ____.

Accepted Answer

A)  becomes completely degenerate in the core, changing the pressure-temperature relationship 
B)  cannot produce energy through fusion 
C)  will only fuse in the presence of even more massive nuclei 
D)  is not found in nature 
E)  decays radioactively before it can undergo fusion 
A)  becomes completely degenerate in the core, changing the pressure-temperature relationship 
B)  cannot produce energy through fusion 
C)  will only fuse in the presence of even more massive nuclei 
D)  is not found in nature 
E)  decays radioactively before it can undergo fusion

Question 11

A medium-mass star becomes a red giant as the result of _______________ fusion in a shell.

Accepted Answer

The answer of A medium-mass star becomes a red giant...

Question 12

All type I supernovae are caused by white dwarfs.

Accepted Answer

A) True 
 B)False

Question 13

Many medium-mass stars will expel its outer atomosphere to form a(n) _______________ nebula as they age.

Accepted Answer

The answer of Many medium-mass stars will expel its outer...

Question 14

Why is the production of iron important for understanding the explosion of massive stars?

Accepted Answer

Iron nuclei do not produce energy when t

The supernova event for a massive star that has lost a large amount of mass to a close binary companion ____.

High-mass stars evolve differently than medium-mass stars because they are able to fuse _______________.

Binary systems with pairs of stars orbiting each other are ____.

Fusion of degenerate hydrogen on the surface of a white dwarf causes temperatures to reach millions of degrees and the density tens of thousands the density of water releasing enough energy to blow the surface layers, resulting in a(n) _______________.

A planetary nebula is visible due to ____.

The Algol paradox is concerned with ____.

What positive effect have supernovae had on the development of life on Earth?

The evolution of a medium-mass star like the Sun, when off of the main sequence, is ____.

The Chandrasekhar limit defines the ____.

A massive star can fuse more and more massive nuclei, but this process is limited by the fact that, at some point, an element that is produced ____.

A medium-mass star becomes a red giant as the result of _______________ fusion in a shell.

All type I supernovae are caused by white dwarfs.

Many medium-mass stars will expel its outer atomosphere to form a(n) _______________ nebula as they age.

Why is the production of iron important for understanding the explosion of massive stars?

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Moon Phases and Eclipses

Origins of Modern Astronomy

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Light and Telescopes

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The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

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Exam 13: Deaths of Stars

The supernova event for a massive star that has lost a large amount of mass to a close binary companion ____.

High-mass stars evolve differently than medium-mass stars because they are able to fuse _______________.

Binary systems with pairs of stars orbiting each other are ____.

Fusion of degenerate hydrogen on the surface of a white dwarf causes temperatures to reach millions of degrees and the density tens of thousands the density of water releasing enough energy to blow the surface layers, resulting in a(n) _______________.

A planetary nebula is visible due to ____.

The Algol paradox is concerned with ____.

What positive effect have supernovae had on the development of life on Earth?

The evolution of a medium-mass star like the Sun, when off of the main sequence, is ____.

The Chandrasekhar limit defines the ____.

A massive star can fuse more and more massive nuclei, but this process is limited by the fact that, at some point, an element that is produced ____.

A medium-mass star becomes a red giant as the result of _______________ fusion in a shell.

All type I supernovae are caused by white dwarfs.

Many medium-mass stars will expel its outer atomosphere to form a(n) _______________ nebula as they age.

Why is the production of iron important for understanding the explosion of massive stars?

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology

Filters