Question 1

Stars at the lower end of the main sequence have

Accepted Answer

A) high temperatures and large masses. 
B) high temperatures and small masses. 
C) low temperatures and large masses. 
D) low temperatures and small masses. 
A) high temperatures and large masses. 
B) high temperatures and small masses. 
C) low temperatures and large masses. 
D) low temperatures and small masses. D

Question 2

Relatively few stars become

Accepted Answer

A) members of the main sequence. 
B) red giants. 
C) white dwarfs. 
D) supernovas. 
A) members of the main sequence. 
B) red giants. 
C) white dwarfs. 
D) supernovas. D

Question 3

What keeps light from escaping from a black hole is its

Accepted Answer

A) strong electric field. 
B) strong magnetic field. 
C) strong gravitational field. 
D) absorbing atmosphere. 
A) strong electric field. 
B) strong magnetic field. 
C) strong gravitational field. 
D) absorbing atmosphere. C

Question 4

A gamma-ray burst is a short, intense flood of gamma rays

Accepted Answer

A) from the sun. 
B) from the black hole at the center of our galaxy. 
C) from a nearby neutron star. 
D) that may have caused biological extinctions in the past. 
A) from the sun. 
B) from the black hole at the center of our galaxy. 
C) from a nearby neutron star. 
D) that may have caused biological extinctions in the past.

Question 5

The majority of main-sequence stars are

Accepted Answer

A) blue. 
B) white. 
C) yellow. 
D) red. 
A) blue. 
B) white. 
C) yellow. 
D) red.

Question 6

Black holes are the remnants of

Accepted Answer

A) stars with small masses. 
B) stars with large masses. 
C) white dwarfs. 
D) black dwarfs. 
A) stars with small masses. 
B) stars with large masses. 
C) white dwarfs. 
D) black dwarfs.

Question 7

At the end of its period in the main sequence, a very heavy star

Accepted Answer

A) breaks up into several smaller stars. 
B) cools down into a white dwarf. 
C) expands into a red giant. 
D) explodes into a supernova. 
A) breaks up into several smaller stars. 
B) cools down into a white dwarf. 
C) expands into a red giant. 
D) explodes into a supernova.

Question 8

The star nearest to the sun is approximately

Accepted Answer

A) 1 light-minute away. 
B) 4 light-years away. 
C) 300 light-years away. 
D) 4000 light-years away. 
A) 1 light-minute away. 
B) 4 light-years away. 
C) 300 light-years away. 
D) 4000 light-years away.

Question 9

A star whose spectral lines are shifted toward the red end of the spectrum

Accepted Answer

A) has a magnetic field. 
B) is moving toward us. 
C) is moving away from us. 
D) is moving across our line of sight. 
A) has a magnetic field. 
B) is moving toward us. 
C) is moving away from us. 
D) is moving across our line of sight.

Question 10

The duration of the sunspot cycle is about

Accepted Answer

A) 27 days. 
B) 6 months. 
C) 3 years. 
D) 11 years. 
A) 27 days. 
B) 6 months. 
C) 3 years. 
D) 11 years.

Question 11

Which of the following can appear as disks with the help of a telescope?

Accepted Answer

A) planets 
B) main-sequence stars 
C) red giants 
D) supernovas 
A) planets 
B) main-sequence stars 
C) red giants 
D) supernovas

Question 12

Stars seem to twinkle because of

Accepted Answer

A) variations in their brightnesses. 
B) variations in their colors. 
C) turbulent movements in their atmospheres. 
D) turbulent movements in the earth's atmosphere. 
A) variations in their brightnesses. 
B) variations in their colors. 
C) turbulent movements in their atmospheres. 
D) turbulent movements in the earth's atmosphere.

Question 13

The less the mass of a main-sequence star, the

Accepted Answer

A) lower its density. 
B) cooler it is. 
C) brighter it is. 
D) shorter its lifetime. 
A) lower its density. 
B) cooler it is. 
C) brighter it is. 
D) shorter its lifetime.

Question 14

The temperature of a star directly affects its

Accepted Answer

A) mass. 
B) color. 
C) composition. 
D) age. 
A) mass. 
B) color. 
C) composition. 
D) age.

Question 15

Sunspots

Accepted Answer

A) are hotter than the rest of the solar surface. 
B) are dark clouds floating in the solar atmosphere. 
C) occur at random intervals. 
D) are correlated with a number of terrestrial effects. 
A) are hotter than the rest of the solar surface. 
B) are dark clouds floating in the solar atmosphere. 
C) occur at random intervals. 
D) are correlated with a number of terrestrial effects.

Question 16

The temperature of the sun's photosphere is about

Accepted Answer

A) 600 K. 
B) 6000 K. 
C) 14 million K. 
D) 14 billion K. 
A) 600 K. 
B) 6000 K. 
C) 14 million K. 
D) 14 billion K.

Question 17

Red giant stars

Accepted Answer

A) are not very bright. 
B) have relatively low surface temperatures. 
C) represent the initial stage in a star's cycle. 
D) are among the densest objects in the universe. 
A) are not very bright. 
B) have relatively low surface temperatures. 
C) represent the initial stage in a star's cycle. 
D) are among the densest objects in the universe.

Question 18

Advantages of large reflecting telescopes include their ability to

Accepted Answer

A) better resolve objects close together in the sky. 
B) gather more light from faint objects. 
C) be modified to correct for flickering images due to atmospheric turbulence. 
D) All of these choices. 
A) better resolve objects close together in the sky. 
B) gather more light from faint objects. 
C) be modified to correct for flickering images due to atmospheric turbulence. 
D) All of these choices.

Question 19

The spectrum of a star can provide information of which one or more of the following?

Accepted Answer

A) The star's magnetic field. 
B) The star's temperature. 
C) The star's relative motion toward or away from us. 
D) The star's composition. 
E) All of the above. 
A) The star's magnetic field. 
B) The star's temperature. 
C) The star's relative motion toward or away from us. 
D) The star's composition. 
E) All of the above.

Question 20

A supernova explosion may leave behind a

Accepted Answer

A) neutron star. 
B) white dwarf. 
C) red dwarf. 
D) red giant. 
A) neutron star. 
B) white dwarf. 
C) red dwarf. 
D) red giant.

Stars at the lower end of the main sequence have

Relatively few stars become

What keeps light from escaping from a black hole is its

A gamma-ray burst is a short, intense flood of gamma rays

The majority of main-sequence stars are

Black holes are the remnants of

At the end of its period in the main sequence, a very heavy star

The star nearest to the sun is approximately

A star whose spectral lines are shifted toward the red end of the spectrum

The duration of the sunspot cycle is about

Which of the following can appear as disks with the help of a telescope?

Stars seem to twinkle because of

The less the mass of a main-sequence star, the

The temperature of a star directly affects its

Sunspots

The temperature of the sun's photosphere is about

Red giant stars

Advantages of large reflecting telescopes include their ability to

The spectrum of a star can provide information of which one or more of the following?

A supernova explosion may leave behind a

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Nucleus

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Universe

Filters

Exam 18: The Stars

Stars at the lower end of the main sequence have

Relatively few stars become

What keeps light from escaping from a black hole is its

A gamma-ray burst is a short, intense flood of gamma rays

The majority of main-sequence stars are

Black holes are the remnants of

At the end of its period in the main sequence, a very heavy star

The star nearest to the sun is approximately

A star whose spectral lines are shifted toward the red end of the spectrum

The duration of the sunspot cycle is about

Which of the following can appear as disks with the help of a telescope?

Stars seem to twinkle because of

The less the mass of a main-sequence star, the

The temperature of a star directly affects its

Sunspots

The temperature of the sun's photosphere is about

Red giant stars

Advantages of large reflecting telescopes include their ability to

The spectrum of a star can provide information of which one or more of the following?

A supernova explosion may leave behind a

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Nucleus

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Universe

Filters