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 A

Question 2

Supernovae are the main source of ____ in the interstellar medium.

Accepted Answer

A)  cosmic rays 
B)  helium 
C)  dust 
D)  carbon 
E)  synchotron radiation 
A)  cosmic rays 
B)  helium 
C)  dust 
D)  carbon 
E)  synchotron radiation C

Question 3

The evolution of a "high mass star" is different from the evolution of smaller stars because these stars ____.

Accepted Answer

A)  do not generate strong stellar winds 
B)  rotate faster 
C)  have stronger magnetic fields 
D)  can ignite carbon fusion 
E)  are never in binary systems 
A)  do not generate strong stellar winds 
B)  rotate faster 
C)  have stronger magnetic fields 
D)  can ignite carbon fusion 
E)  are never in binary systems D

Question 4

The main observable difference separating Type I and Type II supernovae is ____.

Accepted Answer

A)  neutrino emission 
B)  iron absorption lines 
C)  a difference in luminosity of several thousand times 
D)  the presence or absence of hydrogen absorption lines 
E)  the presence or absence of hydrogen emission lines 
A)  neutrino emission 
B)  iron absorption lines 
C)  a difference in luminosity of several thousand times 
D)  the presence or absence of hydrogen absorption lines 
E)  the presence or absence of hydrogen emission lines

Question 5

What is an accretion disk?

Accepted Answer

Matter falling on to a compact

Question 6

A medium-mass star evolves into a red giant because ____.

Accepted Answer

A)  the core expands as new fusion products collect there 
B)  the surface of the star becomes cooler 
C)  energy from hydrogen shell burning and helium fusion forces the outer layer to expand 
D)  the surface of the star becomes hotter 
E)  increased stellar winds carry large amounts of material off of the surface of the star 
A)  the core expands as new fusion products collect there 
B)  the surface of the star becomes cooler 
C)  energy from hydrogen shell burning and helium fusion forces the outer layer to expand 
D)  the surface of the star becomes hotter 
E)  increased stellar winds carry large amounts of material off of the surface of the star

Question 7

How have supernovae affected the development of life on Earth?

Accepted Answer

Supernova shock waves are capable of tri

Question 8

A nova is caused by the ignition of ____.

Accepted Answer

A)  hydrogen fusion in material on the surface of a white dwarf 
B)  carbon fusion in a white dwarf core 
C)  helium fusion in the core of a massive red giant 
D)  silicon fusion in the core of a high mass star 
E)  iron fusion in the core of a high mass star 
A)  hydrogen fusion in material on the surface of a white dwarf 
B)  carbon fusion in a white dwarf core 
C)  helium fusion in the core of a massive red giant 
D)  silicon fusion in the core of a high mass star 
E)  iron fusion in the core of a high mass star

Question 9

A white dwarf generates energy through fusion.

Accepted Answer

A) True 
 B)False

Question 10

A white dwarf will radiate its heat into space and become a black dwarf after a few ____.

Accepted Answer

A)  thousands of years 
B)  millions of years 
C)  hundreds of millions of years 
D)  billions of years 
E)  hundreds of billions of years 
A)  thousands of years 
B)  millions of years 
C)  hundreds of millions of years 
D)  billions of years 
E)  hundreds of billions of years

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

A white dwarf stops collapsing and forms a stable structure due to forces arising from ____.

Accepted Answer

A)  rapid rotation 
B)  magnetic fields 
C)  gas pressure 
D)  neutron degeneracy 
E)  electron degeneracy 
A)  rapid rotation 
B)  magnetic fields 
C)  gas pressure 
D)  neutron degeneracy 
E)  electron degeneracy

Question 13

Stars with a mass of about 0.5 to 8 solar masses evolve differently than other mass ranges because ____.

Accepted Answer

A)  their interior structure is controlled by radiative energy transport 
B)  they will never reach the temperature needed to ignite carbon fusion 
C)  their interior structure is controlled by convective energy transport 
D)  they have strong stellar winds throughout their main-sequence lifetimes 
E)  they will never reach the temperature required to establish a helium-fusion shell 
A)  their interior structure is controlled by radiative energy transport 
B)  they will never reach the temperature needed to ignite carbon fusion 
C)  their interior structure is controlled by convective energy transport 
D)  they have strong stellar winds throughout their main-sequence lifetimes 
E)  they will never reach the temperature required to establish a helium-fusion shell

Question 14

A "nova" is the event that creates a planetary nebula.

Accepted Answer

A) True 
 B)False

Question 15

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 16

Although neutrino emission is used to detect supernovae, they do not play a role in the supernova explosion itself.

Accepted Answer

A) True 
 B)False

Question 17

Chinese astronomers observed supernovae, and called them _______________ stars.

Accepted Answer

The answer of Chinese astronomers observed supernovae, and called them...

Question 18

The amount of mass lost in a star's solar wind is generally greatest during its main sequence lifetime.

Accepted Answer

A) True 
 B)False

Question 19

Supernovae have little effect on the development of planets such as Earth.

Accepted Answer

A) True 
 B)False

Question 20

The most easily visible supernova remnant is the _______________ Nebula.

Accepted Answer

The answer of The most easily visible supernova remnant is...

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 ____.

Supernovae are the main source of ____ in the interstellar medium.

The evolution of a "high mass star" is different from the evolution of smaller stars because these stars ____.

The main observable difference separating Type I and Type II supernovae is ____.

What is an accretion disk?

A medium-mass star evolves into a red giant because ____.

How have supernovae affected the development of life on Earth?

A nova is caused by the ignition of ____.

A white dwarf generates energy through fusion.

A white dwarf will radiate its heat into space and become a black dwarf after a few ____.

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

A white dwarf stops collapsing and forms a stable structure due to forces arising from ____.

Stars with a mass of about 0.5 to 8 solar masses evolve differently than other mass ranges because ____.

A "nova" is the event that creates a planetary nebula.

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

Although neutrino emission is used to detect supernovae, they do not play a role in the supernova explosion itself.

Chinese astronomers observed supernovae, and called them _______________ stars.

The amount of mass lost in a star's solar wind is generally greatest during its main sequence lifetime.

Supernovae have little effect on the development of planets such as Earth.

The most easily visible supernova remnant is the _______________ Nebula.

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

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