Question 1

The brightest stars in aging globular clusters will be

Accepted Answer

A)  core stars of planetary nebulae. 
B)  blue supergiants like Rigel and Deneb. 
C)  massive blue main- sequence stars like Spica. 
D)  red supergiants like Betelgeuse and Antares. 
E)  blue stragglers. 
A)  core stars of planetary nebulae. 
B)  blue supergiants like Rigel and Deneb. 
C)  massive blue main- sequence stars like Spica. 
D)  red supergiants like Betelgeuse and Antares. 
E)  blue stragglers.

Question 2

Which of these is true of planetary nebulae?

Accepted Answer

A)  They are the material which causes the eclipses in eclipsing binary systems. 
B)  They are ejected envelopes surrounding a highly evolved low- mass star. 
C)  They are expelled by the most massive stars in their final stages before supernova. 
D)  They are rings of material around protostars that will accrete into planets in time. 
E)  They are the envelopes that form when blue stragglers merge. 
A)  They are the material which causes the eclipses in eclipsing binary systems. 
B)  They are ejected envelopes surrounding a highly evolved low- mass star. 
C)  They are expelled by the most massive stars in their final stages before supernova. 
D)  They are rings of material around protostars that will accrete into planets in time. 
E)  They are the envelopes that form when blue stragglers merge.

Question 3

Compared to our Sun, a typical white dwarf has

Accepted Answer

A)  a smaller mass and half the density. 
B)  a larger mass and a hundred times lower density. 
C)  about the same mass and a million times higher density. 
D)  about the same mass and density. 
E)  a smaller mass and twice the density. 
A)  a smaller mass and half the density. 
B)  a larger mass and a hundred times lower density. 
C)  about the same mass and a million times higher density. 
D)  about the same mass and density. 
E)  a smaller mass and twice the density.

Question 4

How can the age of a star cluster be found from its H- R diagram?

Accepted Answer

The older the cluster is, the farther do

Question 5

Gold is rare since the only time it can be formed is during a supernova.

Accepted Answer

A) True 
 B)False

Question 6

The balance between gravity and creates the internal structure of stars.

Accepted Answer

A)  electron degeneracy 
B)  the helium flash 
C)  radiation pressure 
D)  hydrogen gas 
E)  relativistic electrons 
A)  electron degeneracy 
B)  the helium flash 
C)  radiation pressure 
D)  hydrogen gas 
E)  relativistic electrons

Question 7

All stars have roughly the same luminosity after the helium flash.

Accepted Answer

A) True 
 B)False

Question 8

The Crab Nebula is an example of a(n) _ .

Accepted Answer

The answer of The Crab Nebula is an example of...

Question 9

In the cores of the most massive stars, the electrons and protons fuse together and form neutrons.

Accepted Answer

A) True 
 B)False

Question 10

What made supernova 1987A so useful to study?

Accepted Answer

A)  It occurred after new telescopes, such as Hubble, could observe it very closely. 
B)  Its progenitor had been observed previously. 
C)  In the Large Magellanic Cloud, we already knew its distance. 
D)  We saw direct evidence of nickel to iron decay in its light curve. 
E)  All of the above are correct. 
A)  It occurred after new telescopes, such as Hubble, could observe it very closely. 
B)  Its progenitor had been observed previously. 
C)  In the Large Magellanic Cloud, we already knew its distance. 
D)  We saw direct evidence of nickel to iron decay in its light curve. 
E)  All of the above are correct.

Question 11

A massive star may change its color and size notably, but its high luminosity remains fairly constant.

Accepted Answer

A) True 
 B)False

Question 12

Our Sun will first become a red giant, then a white dwarf, and finally a brown dwarf.

Accepted Answer

A) True 
 B)False

Question 13

Relate a nova and a Type I supernova.

Accepted Answer

Both are the result of a binary system c

Question 14

Rigel, a blue supergiant, is 17 times more massive than the Sun and, therefore, is likely
in age.

Accepted Answer

The answer of Rigel, a blue supergiant, is 17 times...

Question 15

While more massive than most of its neighbors, our Sun is still technically a low- mass star.

Accepted Answer

A) True 
 B)False

Question 16

As a result of the helium flash, a star's luminosity .

Accepted Answer

The answer of As a result of the helium flash,...

Question 17

The nova event is created by the helium flash.

Accepted Answer

A) True 
 B)False

Question 18

The heaviest nuclei of all are formed

Accepted Answer

A)  during nova explosions. 
B)  in the horizontal branch. 
C)  in the core collapse that sets the stage for Type II supernovae. 
D)  in dense white dwarfs. 
E)  in the ejection of matter in the planetary nebula. 
A)  during nova explosions. 
B)  in the horizontal branch. 
C)  in the core collapse that sets the stage for Type II supernovae. 
D)  in dense white dwarfs. 
E)  in the ejection of matter in the planetary nebula.

Question 19

The helium flash converts helium nuclei into

Accepted Answer

A)  iron. 
B)  carbon. 
C)  oxygen. 
D)  boron. 
E)  beryllium. 
A)  iron. 
B)  carbon. 
C)  oxygen. 
D)  boron. 
E)  beryllium.

Question 20

How are elements heavier than iron made? Why are they rare?

Accepted Answer

The elements heavier than iron are forme

The brightest stars in aging globular clusters will be

Which of these is true of planetary nebulae?

Compared to our Sun, a typical white dwarf has

How can the age of a star cluster be found from its H- R diagram?

Gold is rare since the only time it can be formed is during a supernova.

The balance between gravity and creates the internal structure of stars.

All stars have roughly the same luminosity after the helium flash.

The Crab Nebula is an example of a(n) _ .

In the cores of the most massive stars, the electrons and protons fuse together and form neutrons.

What made supernova 1987A so useful to study?

A massive star may change its color and size notably, but its high luminosity remains fairly constant.

Our Sun will first become a red giant, then a white dwarf, and finally a brown dwarf.

Relate a nova and a Type I supernova.

Rigel, a blue supergiant, is 17 times more massive than the Sun and, therefore, is likely in age.

While more massive than most of its neighbors, our Sun is still technically a low- mass star.

As a result of the helium flash, a star's luminosity .

The nova event is created by the helium flash.

The heaviest nuclei of all are formed

The helium flash converts helium nuclei into

How are elements heavier than iron made? Why are they rare?

Charting the Heavens: the Foundations of Astronomy

The Copernican Revolution: the Birth of Modern Science

Light and Matter: the Inner Workings of the Cosmos

Telescopes: the Tools of Astronomy

The Solar System: Interplanetary Matter and the Birth of the Planets

Earth and Its Moon: Our Cosmic Backyard

The Terrestrial Planets: a Study in Contrasts

The Jovian Planets: Giants of the Solar System

Moons, Rings, and Plutoids: Small Worlds Among Giants

The Sun: Our Parent Star

Measuring the Stars: Giants, Dwarfs, and the Main Sequence

The Interstellar Medium: Star Formation in the Milky Way

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: a Spiral in Space

Normal and Active Galaxies: Building Blocks of the Universe

Hubbles Law and Dark Matter: the Large-Scale Structure of the Cosmos

Cosmology: the Big Bang and the Fate of the Universe

Life in the Universe: Are We Alone

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Exam 13: Stellar Evolution: the Lives and Deaths of Stars

The brightest stars in aging globular clusters will be

Which of these is true of planetary nebulae?

Compared to our Sun, a typical white dwarf has

How can the age of a star cluster be found from its H- R diagram?

Gold is rare since the only time it can be formed is during a supernova.

The balance between gravity and creates the internal structure of stars.

All stars have roughly the same luminosity after the helium flash.

The Crab Nebula is an example of a(n) _ .

In the cores of the most massive stars, the electrons and protons fuse together and form neutrons.

What made supernova 1987A so useful to study?

A massive star may change its color and size notably, but its high luminosity remains fairly constant.

Our Sun will first become a red giant, then a white dwarf, and finally a brown dwarf.

Relate a nova and a Type I supernova.

Rigel, a blue supergiant, is 17 times more massive than the Sun and, therefore, is likely in age.

While more massive than most of its neighbors, our Sun is still technically a low- mass star.

As a result of the helium flash, a star's luminosity .

The nova event is created by the helium flash.

The heaviest nuclei of all are formed

The helium flash converts helium nuclei into

How are elements heavier than iron made? Why are they rare?

Charting the Heavens: the Foundations of Astronomy

The Copernican Revolution: the Birth of Modern Science

Light and Matter: the Inner Workings of the Cosmos

Telescopes: the Tools of Astronomy

The Solar System: Interplanetary Matter and the Birth of the Planets

Earth and Its Moon: Our Cosmic Backyard

The Terrestrial Planets: a Study in Contrasts

The Jovian Planets: Giants of the Solar System

Moons, Rings, and Plutoids: Small Worlds Among Giants

The Sun: Our Parent Star

Measuring the Stars: Giants, Dwarfs, and the Main Sequence

The Interstellar Medium: Star Formation in the Milky Way

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: a Spiral in Space

Normal and Active Galaxies: Building Blocks of the Universe

Hubbles Law and Dark Matter: the Large-Scale Structure of the Cosmos

Cosmology: the Big Bang and the Fate of the Universe

Life in the Universe: Are We Alone

Filters