Question 1

When a binary system loses orbital energy, it emits _______________ radiation.

Accepted Answer

The answer of When a binary system loses orbital energy,...

Question 2

Why does our theory predict that neutron stars will have strong magnetic fields

Accepted Answer

All stars have magnetic fields, and some

Question 3

What observational evidence do we have that black holes exist

Accepted Answer

An isolated black hole in space will not

Question 4

None of the pulsars emit pulses of visible light because

Accepted Answer

A) pulsars are too hot to emit visible light. 
B) pulsars contain black holes that won't let visible light escape. 
C) the gravitational field of a pulsar is so great that the visible light emitted is redshifted. 
D) pulsars are too far away for the visible light to be bright enough to be detected at Earth. 
E) A few pulsars do emit visible light pulses. 
A) pulsars are too hot to emit visible light. 
B) pulsars contain black holes that won't let visible light escape. 
C) the gravitational field of a pulsar is so great that the visible light emitted is redshifted. 
D) pulsars are too far away for the visible light to be bright enough to be detected at Earth. 
E) A few pulsars do emit visible light pulses.

Question 5

The calculated Schwarzschild radius of a 2-   black hole is approximately

Accepted Answer

A) 6 km. 
B) 4 km. 
C) 2 km. 
D) 12 km. 
E) 36 km. 
A) 6 km. 
B) 4 km. 
C) 2 km. 
D) 12 km. 
E) 36 km.

Question 6

How are neutron stars and white dwarfs similar

Accepted Answer

They are both compact objects,

Question 7

LMC X-3 is a binary system that is believed to contain a black hole.

Accepted Answer

A) True 
 B)False

Question 8

Why does our theory predict that neutron stars will spin rapidly

Accepted Answer

The principle of conservation of angular

Question 9

The density of a _________ is greater than the density of a _________.

Accepted Answer

A) white dwarf; neutron star 
B) neutron star; black hole 
C) pulsar; neutron star 
D) pulsar; white dwarf 
E) white dwarf; black hole 
A) white dwarf; neutron star 
B) neutron star; black hole 
C) pulsar; neutron star 
D) pulsar; white dwarf 
E) white dwarf; black hole

Question 10

in the following cartoon of an astronaut traveling to a black hole in, the black hole is located above the person's head according to the text.

Accepted Answer

A) True 
 B)False

Question 11

In the lighthouse model shown above, the light bulb represents the neutron star.

Accepted Answer

A) True 
 B)False

Question 12

Light that is shifted toward the color red due to the light passing very near a compact object is called ____________________.

Accepted Answer

gravitatio

Question 13

-Using the above graph of modulated light from a pulsar, how many planets can you determine to be in this system

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
A) 0 
B) 1 
C) 2 
D) 3

Question 14

Why do we not expect to find a 5-solar-mass neutron star

Accepted Answer

The most widely accepted calculations su

Question 15

The singularity of a black hole

Accepted Answer

A) is found outside the event horizon. 
B) is located within the event horizon. 
C) can only be located if the black hole is in a binary system. 
D) doesn't exist since all black holes have a finite size. 
A) is found outside the event horizon. 
B) is located within the event horizon. 
C) can only be located if the black hole is in a binary system. 
D) doesn't exist since all black holes have a finite size.

Question 16

Many pulsars have periods that are gradually getting longer as the spinning neutron stars lose energy.

Accepted Answer

A) True 
 B)False

Question 17

An isolated black hole in space would be difficult to detect because

Accepted Answer

A) there would be no light source nearby. 
B) it would not be rotating rapidly. 
C) it would be stationary. 
D) very little matter would be falling into it. 
E) there would be very few stars behind it whose light the black hole could block out. 
A) there would be no light source nearby. 
B) it would not be rotating rapidly. 
C) it would be stationary. 
D) very little matter would be falling into it. 
E) there would be very few stars behind it whose light the black hole could block out.

Question 18

The mass of a neutron star is

Accepted Answer

A) several time that of the Sun. 
B) about the same as that of the Sun. 
C) about the same as Earth. 
D) smaller than any of these. 
A) several time that of the Sun. 
B) about the same as that of the Sun. 
C) about the same as Earth. 
D) smaller than any of these.

Question 19

Gamma-ray bursts lasting longer than two seconds appear to be related to ______________.

Accepted Answer

The answer of Gamma-ray bursts lasting longer than two seconds...

When a binary system loses orbital energy, it emits _______________ radiation.

Why does our theory predict that neutron stars will have strong magnetic fields

What observational evidence do we have that black holes exist

None of the pulsars emit pulses of visible light because

The calculated Schwarzschild radius of a 2- black hole is approximately

How are neutron stars and white dwarfs similar

LMC X-3 is a binary system that is believed to contain a black hole.

Why does our theory predict that neutron stars will spin rapidly

The density of a _ is greater than the density of a _.

in the following cartoon of an astronaut traveling to a black hole in, the black hole is located above the person's head according to the text.

In the lighthouse model shown above, the light bulb represents the neutron star.

Light that is shifted toward the color red due to the light passing very near a compact object is called ____________________.

-Using the above graph of modulated light from a pulsar, how many planets can you determine to be in this system

Why do we not expect to find a 5-solar-mass neutron star

The singularity of a black hole

Many pulsars have periods that are gradually getting longer as the spinning neutron stars lose energy.

An isolated black hole in space would be difficult to detect because

The mass of a neutron star is

Gamma-ray bursts lasting longer than two seconds appear to be related to ______________.

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

The Deaths of Stars

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 11: Neutron Stars and Black Holes

When a binary system loses orbital energy, it emits _______________ radiation.

Why does our theory predict that neutron stars will have strong magnetic fields

What observational evidence do we have that black holes exist

None of the pulsars emit pulses of visible light because

The calculated Schwarzschild radius of a 2- black hole is approximately

How are neutron stars and white dwarfs similar

LMC X-3 is a binary system that is believed to contain a black hole.

Why does our theory predict that neutron stars will spin rapidly

The density of a _________ is greater than the density of a _________.

in the following cartoon of an astronaut traveling to a black hole in, the black hole is located above the person's head according to the text.

In the lighthouse model shown above, the light bulb represents the neutron star.

Light that is shifted toward the color red due to the light passing very near a compact object is called ____________________.

-Using the above graph of modulated light from a pulsar, how many planets can you determine to be in this system

Why do we not expect to find a 5-solar-mass neutron star

The singularity of a black hole

Many pulsars have periods that are gradually getting longer as the spinning neutron stars lose energy.

An isolated black hole in space would be difficult to detect because

The mass of a neutron star is

Gamma-ray bursts lasting longer than two seconds appear to be related to ______________.

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

The Deaths of Stars

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

The density of a _ is greater than the density of a _.