Question 1

Compared with the Population I stars in the disk of our galaxy, the Population II stars in globular clusters

Accepted Answer

A)  are generally younger. 
B)  have about the same age distribution. 
C)  are generally older. 
D)  Any of these choices may be correct in a particular cluster. 
A)  are generally younger. 
B)  have about the same age distribution. 
C)  are generally older. 
D)  Any of these choices may be correct in a particular cluster. C

Question 2

The stars in our galaxy

Accepted Answer

A)  move entirely at random. 
B)  move toward its center. 
C)  move away from its center. 
D)  revolve around its center. 
A)  move entirely at random. 
B)  move toward its center. 
C)  move away from its center. 
D)  revolve around its center. D

Question 3

The "big bang" refers to the origin of

Accepted Answer

A)  the sun. 
B)  the solar system. 
C)  our galaxy. 
D)  the universe. 
A)  the sun. 
B)  the solar system. 
C)  our galaxy. 
D)  the universe. D

Question 4

Molecules in space can be identified from their emissions of

Accepted Answer

A)  light waves. 
B)  radio waves. 
C)  cosmic waves. 
D)  X-rays. 
A)  light waves. 
B)  radio waves. 
C)  cosmic waves. 
D)  X-rays.

Question 5

A source of radio waves from space is

Accepted Answer

A)  cosmic rays. 
B)  dark matter. 
C)  fast electrons that move through magnetic fields. 
D)  white dwarfs. 
A)  cosmic rays. 
B)  dark matter. 
C)  fast electrons that move through magnetic fields. 
D)  white dwarfs.

Question 6

All spiral galaxies apparently

Accepted Answer

A)  are rotating. 
B)  are contracting. 
C)  are expanding. 
D)  consist entirely of Population II stars. 
A)  are rotating. 
B)  are contracting. 
C)  are expanding. 
D)  consist entirely of Population II stars.

Question 7

In a "closed" universe

Accepted Answer

A)  expansion of the universe will continue forever. 
B)  no additional new stars will form. 
C)  the universe will neither expand nor collapse. 
D)  expansion will stop and the universe will ultimately collapse. 
A)  expansion of the universe will continue forever. 
B)  no additional new stars will form. 
C)  the universe will neither expand nor collapse. 
D)  expansion will stop and the universe will ultimately collapse.

Question 8

The Doppler shifting of radiation from the early universe has resulted in today's universe being bathed in a sea of

Accepted Answer

A)  cosmic rays. 
B)  X-rays. 
C)  radio waves. 
D)  infrared waves. 
A)  cosmic rays. 
B)  X-rays. 
C)  radio waves. 
D)  infrared waves.

Question 9

The energy that reaches the earth in cosmic rays is comparable to the energy that reaches the earth in

Accepted Answer

A)  sunlight. 
B)  moonlight. 
C)  starlight. 
D)  radio waves. 
A)  sunlight. 
B)  moonlight. 
C)  starlight. 
D)  radio waves.

Question 10

The ratio of dark matter to ordinary matter in our galaxy is about

Accepted Answer

A)  1:1. 
B)  2:1. 
C)  6:1. 
D)  25:1. 
A)  1:1. 
B)  2:1. 
C)  6:1. 
D)  25:1.

Question 11

The most distant galaxies are receding at speeds that are

Accepted Answer

A)  much less than the speed of light. 
B)  not far from the speed of light. 
C)  equal to the speed of light. 
D)  greater than the speed of light. 
A)  much less than the speed of light. 
B)  not far from the speed of light. 
C)  equal to the speed of light. 
D)  greater than the speed of light.

Question 12

As they came into being, the planets were primarily heated by

Accepted Answer

A)  gravitational compression. 
B)  solar radiation. 
C)  cosmic rays. 
D)  cosmic background radiation. 
A)  gravitational compression. 
B)  solar radiation. 
C)  cosmic rays. 
D)  cosmic background radiation.

Question 13

Some, and perhaps all, spiral galaxies have at their centers

Accepted Answer

A)  quasars. 
B)  pulsars. 
C)  black holes. 
D)  globular star clusters. 
A)  quasars. 
B)  pulsars. 
C)  black holes. 
D)  globular star clusters.

Question 14

The members of the solar system

Accepted Answer

A)  came from space and were captured by the sun. 
B)  came into being at the same time as the sun did. 
C)  were formed from material ejected by the sun after it came into being. 
D)  were formed from dark matter. 
A)  came from space and were captured by the sun. 
B)  came into being at the same time as the sun did. 
C)  were formed from material ejected by the sun after it came into being. 
D)  were formed from dark matter.

Question 15

In the universe today there

Accepted Answer

A)  seems to be little or no antimatter. 
B)  is much antimatter but less than the amount of matter. 
C)  are equal amounts of antimatter and matter. 
D)  is more antimatter than matter. 
A)  seems to be little or no antimatter. 
B)  is much antimatter but less than the amount of matter. 
C)  are equal amounts of antimatter and matter. 
D)  is more antimatter than matter.

Question 16

Our galaxy is shaped roughly like a

Accepted Answer

A)  bunch of grapes. 
B)  football. 
C)  fried egg. 
D)  salami. 
A)  bunch of grapes. 
B)  football. 
C)  fried egg. 
D)  salami.

Question 17

Primary cosmic rays are produced

Accepted Answer

A)  in the solar system. 
B)  in galaxies. 
C)  in the regions between galaxies. 
D)  everywhere in the universe. 
A)  in the solar system. 
B)  in galaxies. 
C)  in the regions between galaxies. 
D)  everywhere in the universe.

Question 18

Emissions of various kinds from near the center of the Milky Way galaxy suggests the presence of a

Accepted Answer

A)  quasar. 
B)  globular cluster. 
C)  black hole. 
D)  galactic nebula. 
A)  quasar. 
B)  globular cluster. 
C)  black hole. 
D)  galactic nebula.

Question 19

Communications with planets outside the solar system are most likely to be achieved using

Accepted Answer

A)  spacecraft of the kind that went to the moon. 
B)  spacecraft that travel with the speed of light. 
C)  spacecraft that travel faster than light. 
D)  radio waves. 
A)  spacecraft of the kind that went to the moon. 
B)  spacecraft that travel with the speed of light. 
C)  spacecraft that travel faster than light. 
D)  radio waves.

Question 20

The individual stars we can see with the unaided eyes

Accepted Answer

A)  are all members of our galaxy. 
B)  include members of other galaxies. 
C)  are all giant stars. 
D)  are all members of the main sequence. 
A)  are all members of our galaxy. 
B)  include members of other galaxies. 
C)  are all giant stars. 
D)  are all members of the main sequence.

Compared with the Population I stars in the disk of our galaxy, the Population II stars in globular clusters

The stars in our galaxy

The "big bang" refers to the origin of

Molecules in space can be identified from their emissions of

A source of radio waves from space is

All spiral galaxies apparently

In a "closed" universe

The Doppler shifting of radiation from the early universe has resulted in today's universe being bathed in a sea of

The energy that reaches the earth in cosmic rays is comparable to the energy that reaches the earth in

The ratio of dark matter to ordinary matter in our galaxy is about

The most distant galaxies are receding at speeds that are

As they came into being, the planets were primarily heated by

Some, and perhaps all, spiral galaxies have at their centers

The members of the solar system

In the universe today there

Our galaxy is shaped roughly like a

Primary cosmic rays are produced

Emissions of various kinds from near the center of the Milky Way galaxy suggests the presence of a

Communications with planets outside the solar system are most likely to be achieved using

The individual stars we can see with the unaided eyes

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 Stars

Filters

Exam 19: The Universe Galaxies

Compared with the Population I stars in the disk of our galaxy, the Population II stars in globular clusters

The stars in our galaxy

The "big bang" refers to the origin of

Molecules in space can be identified from their emissions of

A source of radio waves from space is

All spiral galaxies apparently

In a "closed" universe

The Doppler shifting of radiation from the early universe has resulted in today's universe being bathed in a sea of

The energy that reaches the earth in cosmic rays is comparable to the energy that reaches the earth in

The ratio of dark matter to ordinary matter in our galaxy is about

The most distant galaxies are receding at speeds that are

As they came into being, the planets were primarily heated by

Some, and perhaps all, spiral galaxies have at their centers

The members of the solar system

In the universe today there

Our galaxy is shaped roughly like a

Primary cosmic rays are produced

Emissions of various kinds from near the center of the Milky Way galaxy suggests the presence of a

Communications with planets outside the solar system are most likely to be achieved using

The individual stars we can see with the unaided eyes

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 Stars

Filters