Question 1

A white dwarf whose red giant companion dumps hydrogen onto it may

Accepted Answer

A) show no effect. 
B) explode recurrently as a nova. 
C) blow up as a type I supernova. 
D) explode recurrently as a nova or blow up as a type Ia supernova. 
A) show no effect. 
B) explode recurrently as a nova. 
C) blow up as a type I supernova. 
D) explode recurrently as a nova or blow up as a type Ia supernova.

Question 2

A(n) ____________________ supernova is caused by the collapse of a massive star that has lost its outer envelope of hydrogen.

Accepted Answer

The answer of A(n) ____________________ supernova is caused by the...

Question 3

In degenerate matter

Accepted Answer

A) pressure depends only on the temperature. 
B) temperature depends only on density. 
C) pressure does not depend on temperature. 
D) pressure does not depend on density. 
E) temperature depends only on density and does not depend on temperature. 
A) pressure depends only on the temperature. 
B) temperature depends only on density. 
C) pressure does not depend on temperature. 
D) pressure does not depend on density. 
E) temperature depends only on density and does not depend on temperature.

Question 4

Explain the sequence of fusion shell formation in massive stars and thus the generation of nested shells.

Accepted Answer

First, massive stars consume the hydroge

Question 5

Explain how we can find the age of a star cluster.

Accepted Answer

We can judge the age of a star cluster b

Question 6

-The SN 1987A event shown above is which type of supernova

Accepted Answer

A) Type Ia 
B) Type Ib 
C) Type II 
D) None of the other choices are correct. 
A) Type Ia 
B) Type Ib 
C) Type II 
D) None of the other choices are correct.

Question 7

Helium fusion is called the triple-alpha process because

Accepted Answer

A) the helium nucleus is known as an alpha particle. 
B) it occurs very rapidly. 
C) it requires a temperature three times greater than that of hydrogen fusion. 
D) it is the third source of the primary fusion processes. 
E) each reaction produces three carbon nuclei. 
A) the helium nucleus is known as an alpha particle. 
B) it occurs very rapidly. 
C) it requires a temperature three times greater than that of hydrogen fusion. 
D) it is the third source of the primary fusion processes. 
E) each reaction produces three carbon nuclei.

Question 8

_________ is a form of electromagnetic radiation produced by rapidly moving electrons spiraling through magnetic fields.

Accepted Answer

A) Lagrangian radiation 
B) Accretion 
C) Ultraviolet radiation 
D) Synchrotron radiation 
E) Infrared radiation 
A) Lagrangian radiation 
B) Accretion 
C) Ultraviolet radiation 
D) Synchrotron radiation 
E) Infrared radiation

Question 9

Planetary nebulae are sites of planet formation.

Accepted Answer

A) True 
 B)False

Question 10

Before it ejects a planetary nebula, a star is a

Accepted Answer

A) red giant. 
B) black hole. 
C) white dwarf. 
D) supernova. 
A) red giant. 
B) black hole. 
C) white dwarf. 
D) supernova.

Question 11

The Algol paradox is explained by considering

Accepted Answer

A) the degenerate nature of the hydrogen on the surface of the white dwarf. 
B) synchrotron radiation. 
C) the rate of expansion of the shock wave inside the supernova. 
D) the rotation rate of a neutron star. 
E) mass transfer between the two stars in a binary system. 
A) the degenerate nature of the hydrogen on the surface of the white dwarf. 
B) synchrotron radiation. 
C) the rate of expansion of the shock wave inside the supernova. 
D) the rotation rate of a neutron star. 
E) mass transfer between the two stars in a binary system.

Question 12

No known white dwarf has a mass greater than the Chandrasekhar limit.

Accepted Answer

A) True 
 B)False

Question 13

Type Ia and Type Ib supernovae both involve binary star systems.

Accepted Answer

A) True 
 B)False

Question 14

Why does a helium flash occur under some circumstances and not under other circumstances when helium fusion begins

Accepted Answer

When the temperature in the core of a st

Question 15

The Sun will eventually become a supernova.

Accepted Answer

A) True 
 B)False

Question 16

___________ clusters are compact, round, and red, containing mostly old stars.

Accepted Answer

The answer of ___________ clusters are compact, round, and red,...

Question 17

The diagram below shows a light curve from a supernova. How many days after maximum light did it take for the supernova to decrease in brightness by a factor of 100

Accepted Answer

A) less than 50 
B) 50 
C) 150 
D) 250 
E) more than 250 
A) less than 50 
B) 50 
C) 150 
D) 250 
E) more than 250

Question 18

Very massive stars lose their outer layers in a planetary nebula.

Accepted Answer

A) True 
 B)False

Question 19

Synchrotron radiation is produced by

Accepted Answer

A) objects with temperature below 10,000 K. 
B) high-velocity electrons moving through a magnetic field. 
C) cold hydrogen atoms in space. 
D) the collapsing cores of massive stars. 
E) a helium flash. 
A) objects with temperature below 10,000 K. 
B) high-velocity electrons moving through a magnetic field. 
C) cold hydrogen atoms in space. 
D) the collapsing cores of massive stars. 
E) a helium flash.

Question 20

A planetary nebula

Accepted Answer

A) produces an absorption spectrum. 
B) produces an emission spectrum. 
C) is contracting to form planets. 
D) is contracting to form a star. 
E) is the result of carbon detonation in a 1-   star. 
A) produces an absorption spectrum. 
B) produces an emission spectrum. 
C) is contracting to form planets. 
D) is contracting to form a star. 
E) is the result of carbon detonation in a 1-   star.

A white dwarf whose red giant companion dumps hydrogen onto it may

A(n) ____________________ supernova is caused by the collapse of a massive star that has lost its outer envelope of hydrogen.

In degenerate matter

Explain the sequence of fusion shell formation in massive stars and thus the generation of nested shells.

Explain how we can find the age of a star cluster.

-The SN 1987A event shown above is which type of supernova

Helium fusion is called the triple-alpha process because

_________ is a form of electromagnetic radiation produced by rapidly moving electrons spiraling through magnetic fields.

Planetary nebulae are sites of planet formation.

Before it ejects a planetary nebula, a star is a

The Algol paradox is explained by considering

No known white dwarf has a mass greater than the Chandrasekhar limit.

Type Ia and Type Ib supernovae both involve binary star systems.

Why does a helium flash occur under some circumstances and not under other circumstances when helium fusion begins

The Sun will eventually become a supernova.

___________ clusters are compact, round, and red, containing mostly old stars.

The diagram below shows a light curve from a supernova. How many days after maximum light did it take for the supernova to decrease in brightness by a factor of 100

Very massive stars lose their outer layers in a planetary nebula.

Synchrotron radiation is produced by

A planetary nebula

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 10: The Deaths of Stars

A white dwarf whose red giant companion dumps hydrogen onto it may

A(n) ____________________ supernova is caused by the collapse of a massive star that has lost its outer envelope of hydrogen.

In degenerate matter

Explain the sequence of fusion shell formation in massive stars and thus the generation of nested shells.

Explain how we can find the age of a star cluster.

-The SN 1987A event shown above is which type of supernova

Helium fusion is called the triple-alpha process because

_________ is a form of electromagnetic radiation produced by rapidly moving electrons spiraling through magnetic fields.

Planetary nebulae are sites of planet formation.

Before it ejects a planetary nebula, a star is a

The Algol paradox is explained by considering

No known white dwarf has a mass greater than the Chandrasekhar limit.

Type Ia and Type Ib supernovae both involve binary star systems.

Why does a helium flash occur under some circumstances and not under other circumstances when helium fusion begins

The Sun will eventually become a supernova.

___________ clusters are compact, round, and red, containing mostly old stars.

The diagram below shows a light curve from a supernova. How many days after maximum light did it take for the supernova to decrease in brightness by a factor of 100

Very massive stars lose their outer layers in a planetary nebula.

Synchrotron radiation is produced by

A planetary nebula

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters