Question 1

Of all elements, ________ has the most stable and tightly bound nucleus.

Accepted Answer

The answer of Of all elements, ________ has the most...

Question 2

The core of a highly evolved high mass star is a little larger than

Accepted Answer

A)  our solar system. 
B)  our Sun. 
C)  Jupiter. 
D)  Earth. 
E)  a white dwarf. 
A)  our solar system. 
B)  our Sun. 
C)  Jupiter. 
D)  Earth. 
E)  a white dwarf.

Question 3

Relatively long duration gamma-ray bursts are produced by

Accepted Answer

A)  novae. 
B)  supernovae. 
C)  hypernovae. 
D)  neutron star mergers. 
E)  black hole mergers. 
A)  novae. 
B)  supernovae. 
C)  hypernovae. 
D)  neutron star mergers. 
E)  black hole mergers.

Question 4

What makes the Crab Nebula supernova remnant unusual as a supernova remnant?

Accepted Answer

A)  It is the biggest supernova remnant visible. 
B)  It is the remnant of a supernova that was observed in the 20th century. 
C)  It is the nearest supernova remnant. 
D)  It is the oldest supernova remnant known. 
E)  It is the remnant of a supernova observed by humans. 
A)  It is the biggest supernova remnant visible. 
B)  It is the remnant of a supernova that was observed in the 20th century. 
C)  It is the nearest supernova remnant. 
D)  It is the oldest supernova remnant known. 
E)  It is the remnant of a supernova observed by humans.

Question 5

Contrast the progenitors of a Type I and a Type II supernova.

Accepted Answer

The progenitor of a Type II su

Question 6

Besides direct formation of a black hole in a hypernova, some think that mergers between neutron stars can create even longer-lived gamma ray bursts as well.

Accepted Answer

A) True 
 B)False

Question 7

The iron we commonly find in our surroundings came from

Accepted Answer

A)  the iron core of a massive star which exploded as a type I supernova. 
B)  planetary nebulae. 
C)  jets ejected by a rapidly spinning pulsar. 
D)  material ejected by a nova explosion. 
E)  decay of nickel 56 and cobalt 56 in a supernova remnant. 
A)  the iron core of a massive star which exploded as a type I supernova. 
B)  planetary nebulae. 
C)  jets ejected by a rapidly spinning pulsar. 
D)  material ejected by a nova explosion. 
E)  decay of nickel 56 and cobalt 56 in a supernova remnant.

Question 8

The heaviest nuclei of all are formed

Accepted Answer

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

Question 9

The Chandrasekhar mass limit is

Accepted Answer

A)  0.08 solar masses. 
B)  0.4 solar masses. 
C)  1.4 solar masses. 
D)  3 solar masses. 
E)  8 solar masses. 
A)  0.08 solar masses. 
B)  0.4 solar masses. 
C)  1.4 solar masses. 
D)  3 solar masses. 
E)  8 solar masses.

Question 10

What is the only element in your body that was formed during the Big Bang, and not in cores of stars? Explain how you know this.

Accepted Answer

Hydrogen was formed during the

Question 11

The radioactive decay of cobalt 56 into iron 56 affects the light curve of a type I supernova about ________ after the initial peak in luminosity.

Accepted Answer

The answer of The radioactive decay of cobalt 56 into...

Question 12

A gamma-ray burster emits a quantity of energy similar to that emitted in a ________.

Accepted Answer

supernova

Question 13

Type II supernovae and star forming regions are related to one another because

Accepted Answer

A)  they both contain ionized hydrogen. 
B)  they both involve high mass ionizing stars. 
C)  the shock waves of a supernova can trigger star formation. 
D)  as a result of both processes, lighter elements are transformed into heavier elements. 
E)  all of the above. 
A)  they both contain ionized hydrogen. 
B)  they both involve high mass ionizing stars. 
C)  the shock waves of a supernova can trigger star formation. 
D)  as a result of both processes, lighter elements are transformed into heavier elements. 
E)  all of the above.

Question 14

What makes the Crab pulsar somewhat unusual among pulsars in general?

Accepted Answer

A)  It is the most intense source of X-rays in the sky. 
B)  It is the fastest pulsar known. 
C)  It is the oldest pulsar observed. 
D)  Its period is not regular like other pulsars. 
E)  It is rather bright at visible wavelengths. 
A)  It is the most intense source of X-rays in the sky. 
B)  It is the fastest pulsar known. 
C)  It is the oldest pulsar observed. 
D)  Its period is not regular like other pulsars. 
E)  It is rather bright at visible wavelengths.

Question 15

The making of abundant iron nuclei is typical of

Accepted Answer

A)  planetary nebula ejection. 
B)  the helium flash. 
C)  all novae. 
D)  type I supernovae. 
E)  type II supernovae. 
A)  planetary nebula ejection. 
B)  the helium flash. 
C)  all novae. 
D)  type I supernovae. 
E)  type II supernovae.

Question 16

Why does iron formation cause a high mass star to "have a heart attack"?

Accepted Answer

Iron is the most tightly bonded of all n

Question 17

A Type I supernova involves the collapsing core of a high mass star.

Accepted Answer

A) True 
 B)False

Question 18

For a nova to occur, the system must have already been a

Accepted Answer

A)  astrometric binary. 
B)  detached binary. 
C)  spectroscopic binary. 
D)  mass-transfer binary. 
E)  eclipsing binary. 
A)  astrometric binary. 
B)  detached binary. 
C)  spectroscopic binary. 
D)  mass-transfer binary. 
E)  eclipsing binary.

Question 19

When helium capture occurs with a carbon 12 nucleus, what results?

Accepted Answer

A)  Nitrogen 14 
B)  Oxygen 16 
C)  Neon 20 
D)  Silicon 28 
E)  Nickel 56 
A)  Nitrogen 14 
B)  Oxygen 16 
C)  Neon 20 
D)  Silicon 28 
E)  Nickel 56

Question 20

Pulsars

Accepted Answer

A)  spin very rapidly when they're young. 
B)  are the cause of gamma-ray bursts. 
C)  spin very slowly when they're young, and gradually spin faster as they age. 
D)  generally form from 25 solar mass stars. 
E)  emit radio in all directions. 
A)  spin very rapidly when they're young. 
B)  are the cause of gamma-ray bursts. 
C)  spin very slowly when they're young, and gradually spin faster as they age. 
D)  generally form from 25 solar mass stars. 
E)  emit radio in all directions.

Of all elements, ________ has the most stable and tightly bound nucleus.

The core of a highly evolved high mass star is a little larger than

Relatively long duration gamma-ray bursts are produced by

What makes the Crab Nebula supernova remnant unusual as a supernova remnant?

Contrast the progenitors of a Type I and a Type II supernova.

Besides direct formation of a black hole in a hypernova, some think that mergers between neutron stars can create even longer-lived gamma ray bursts as well.

The iron we commonly find in our surroundings came from

The heaviest nuclei of all are formed

The Chandrasekhar mass limit is

What is the only element in your body that was formed during the Big Bang, and not in cores of stars? Explain how you know this.

The radioactive decay of cobalt 56 into iron 56 affects the light curve of a type I supernova about ________ after the initial peak in luminosity.

A gamma-ray burster emits a quantity of energy similar to that emitted in a ________.

Type II supernovae and star forming regions are related to one another because

What makes the Crab pulsar somewhat unusual among pulsars in general?

The making of abundant iron nuclei is typical of

Why does iron formation cause a high mass star to "have a heart attack"?

A Type I supernova involves the collapsing core of a high mass star.

For a nova to occur, the system must have already been a

When helium capture occurs with a carbon 12 nucleus, what results?

Pulsars

The Night Sky

Light and Telescopes

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

The Sun

Measuring the Stars

Star Formation and Evolution

Black Holes

The Milky Way Galaxy

Galaxies

Cosmology and the Universe

Filters

Exam 11: Stellar Explosions

Of all elements, ________ has the most stable and tightly bound nucleus.

The core of a highly evolved high mass star is a little larger than

Relatively long duration gamma-ray bursts are produced by

What makes the Crab Nebula supernova remnant unusual as a supernova remnant?

Contrast the progenitors of a Type I and a Type II supernova.

Besides direct formation of a black hole in a hypernova, some think that mergers between neutron stars can create even longer-lived gamma ray bursts as well.

The iron we commonly find in our surroundings came from

The heaviest nuclei of all are formed

The Chandrasekhar mass limit is

What is the only element in your body that was formed during the Big Bang, and not in cores of stars? Explain how you know this.

The radioactive decay of cobalt 56 into iron 56 affects the light curve of a type I supernova about ________ after the initial peak in luminosity.

A gamma-ray burster emits a quantity of energy similar to that emitted in a ________.

Type II supernovae and star forming regions are related to one another because

What makes the Crab pulsar somewhat unusual among pulsars in general?

The making of abundant iron nuclei is typical of

Why does iron formation cause a high mass star to "have a heart attack"?

A Type I supernova involves the collapsing core of a high mass star.

For a nova to occur, the system must have already been a

When helium capture occurs with a carbon 12 nucleus, what results?

Pulsars

The Night Sky

Light and Telescopes

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

The Sun

Measuring the Stars

Star Formation and Evolution

Black Holes

The Milky Way Galaxy

Galaxies

Cosmology and the Universe

Filters