Question 1

Black holes

Accepted Answer

A) are all very small. 
B) are all very large. 
C) are present in the solar system. 
D) can be detected when part of a binary system. 
A) are all very small. 
B) are all very large. 
C) are present in the solar system. 
D) can be detected when part of a binary system.

Question 2

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 3

Streams of protons and electrons from the sun do not affect

Accepted Answer

A) auroras. 
B) the airglow of the night sky. 
C) comet heads. 
D) comet tails. 
A) auroras. 
B) the airglow of the night sky. 
C) comet heads. 
D) comet tails.

Question 4

The number of sunspots

Accepted Answer

A) remains approximately constant. 
B) increases and decreases at random intervals. 
C) increases and decreases in a yearly cycle. 
D) increases and decreases in an 11-year cycle. 
A) remains approximately constant. 
B) increases and decreases at random intervals. 
C) increases and decreases in a yearly cycle. 
D) increases and decreases in an 11-year cycle.

Question 5

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.

Question 6

The distance of a star from the earth can be found

Accepted Answer

A) only if it is part of a double-star system. 
B) by comparing its intrinsic and apparent brightnesses. 
C) from its color. 
D) from its position in the HR diagram. 
A) only if it is part of a double-star system. 
B) by comparing its intrinsic and apparent brightnesses. 
C) from its color. 
D) from its position in the HR diagram.

Question 7

A supernova explosion may leave behind which one or more of the following?

Accepted Answer

A) a black hole 
B) a neutron star 
C) a pulsar 
D) a red giant 
E) Both A, B and C 
A) a black hole 
B) a neutron star 
C) a pulsar 
D) a red giant 
E) Both A, B and C

Question 8

The heaviest elements on the earth were produced in

Accepted Answer

A) the earth's interior. 
B) the sun's interior. 
C) supernova explosions. 
D) black holes. 
A) the earth's interior. 
B) the sun's interior. 
C) supernova explosions. 
D) black holes.

Question 9

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 10

The sun will remain its present size and temperature

Accepted Answer

A) for a few thousand years longer. 
B) for a few million years longer. 
C) for a few billion years longer. 
D) forever. 
A) for a few thousand years longer. 
B) for a few million years longer. 
C) for a few billion years longer. 
D) forever.

Question 11

A star must have a certain minimum mass in order that gravity squeeze its matter sufficiently to

Accepted Answer

A) hold it together as a single body. 
B) produce a temperature high enough for it to glow. 
C) produce a temperature high enough for nuclear reactions to start. 
D) turn its interior into liquid hydrogen. 
A) hold it together as a single body. 
B) produce a temperature high enough for it to glow. 
C) produce a temperature high enough for nuclear reactions to start. 
D) turn its interior into liquid hydrogen.

Question 12

Stars at the upper 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.

Question 13

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 14

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 15

As compared with a large telescope mirror, a large telescope lens

Accepted Answer

A) is easier to support against sag. 
B) does not disperse light. 
C) can provide higher magnification. 
D) has no advantages. 
A) is easier to support against sag. 
B) does not disperse light. 
C) can provide higher magnification. 
D) has no advantages.

Question 16

A brown dwarf

Accepted Answer

A) has less mass than Jupiter. 
B) is a member of the main sequence. 
C) is on its way to becoming a black dwarf. 
D) was never a true star. 
A) has less mass than Jupiter. 
B) is a member of the main sequence. 
C) is on its way to becoming a black dwarf. 
D) was never a true star.

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

Brown dwarfs are

Accepted Answer

A) visible to the naked eye. 
B) present in the solar system. 
C) relatively rare. 
D) relatively common. 
A) visible to the naked eye. 
B) present in the solar system. 
C) relatively rare. 
D) relatively common.

Question 19

The least common of the following are

Accepted Answer

A) white dwarfs. 
B) red dwarfs. 
C) brown dwarfs. 
D) black dwarfs. 
A) white dwarfs. 
B) red dwarfs. 
C) brown dwarfs. 
D) black dwarfs.

Question 20

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.

Black holes

The temperature of a star directly affects its

Streams of protons and electrons from the sun do not affect

The number of sunspots

Relatively few stars become

The distance of a star from the earth can be found

A supernova explosion may leave behind which one or more of the following?

The heaviest elements on the earth were produced in

The star nearest to the sun is approximately

The sun will remain its present size and temperature

A star must have a certain minimum mass in order that gravity squeeze its matter sufficiently to

Stars at the upper end of the main sequence have

Sunspots

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

As compared with a large telescope mirror, a large telescope lens

A brown dwarf

Red giant stars

Brown dwarfs are

The least common of the following are

Stars seem to twinkle because of

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

Universe

Filters

Exam 18: The Stars

Black holes

The temperature of a star directly affects its

Streams of protons and electrons from the sun do not affect

The number of sunspots

Relatively few stars become

The distance of a star from the earth can be found

A supernova explosion may leave behind which one or more of the following?

The heaviest elements on the earth were produced in

The star nearest to the sun is approximately

The sun will remain its present size and temperature

A star must have a certain minimum mass in order that gravity squeeze its matter sufficiently to

Stars at the upper end of the main sequence have

Sunspots

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

As compared with a large telescope mirror, a large telescope lens

A brown dwarf

Red giant stars

Brown dwarfs are

The least common of the following are

Stars seem to twinkle because of

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

Universe

Filters