Question 1

Fast electrons that move through magnetic fields produce

Accepted Answer

A) cosmic rays. 
B) radio waves. 
C) red shifts. 
D) quasars. 
A) cosmic rays. 
B) radio waves. 
C) red shifts. 
D) quasars.

Question 2

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 3

Magnetic fields in our galaxy trap

Accepted Answer

A) cosmic rays. 
B) radio waves. 
C) spectral lines. 
D) meteoroids. 
A) cosmic rays. 
B) radio waves. 
C) spectral lines. 
D) meteoroids.

Question 4

Quasars

Accepted Answer

A) are weak sources of light and radio waves. 
B) are large in view of the energy they emit. 
C) show relatively small red shifts, which suggests they are not far away. 
D) seem to have massive black holes at their centers. 
A) are weak sources of light and radio waves. 
B) are large in view of the energy they emit. 
C) show relatively small red shifts, which suggests they are not far away. 
D) seem to have massive black holes at their centers.

Question 5

Galactic spectra show

Accepted Answer

A) red and blue shifts. 
B) red shifts of the same magnitude. 
C) red shifts that decrease with distance. 
D) red shifts that increase with distance. 
A) red and blue shifts. 
B) red shifts of the same magnitude. 
C) red shifts that decrease with distance. 
D) red shifts that increase with distance.

Question 6

In the universe today there

Accepted Answer

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

Question 7

The galaxies in the universe are distributed

Accepted Answer

A) uniformly. 
B) randomly. 
C) in groups, groups of groups, and so on. 
D) in spiral arms. 
A) uniformly. 
B) randomly. 
C) in groups, groups of groups, and so on. 
D) in spiral arms.

Question 8

In the light of current evidence, a reasonable figure for the age of the universe is

Accepted Answer

A) 13.7 million years. 
B) 13.7 billion years. 
C) 100 billion years. 
D) 15 trillion years. 
A) 13.7 million years. 
B) 13.7 billion years. 
C) 100 billion years. 
D) 15 trillion years.

Question 9

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

Accepted Answer

A) younger. 
B) about the same age. 
C) older. 
D) Any of these choices are correct. 
A) younger. 
B) about the same age. 
C) older. 
D) Any of these choices are correct.

Question 10

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 11

Dark energy

Accepted Answer

A) is the energy equivalent of dark matter. 
B) is the energy of black holes. 
C) is the energy of neutrinos. 
D) has an unknown nature as yet. 
A) is the energy equivalent of dark matter. 
B) is the energy of black holes. 
C) is the energy of neutrinos. 
D) has an unknown nature as yet.

Question 12

Considering matter and energy together, the smallest component of the universe seems to be

Accepted Answer

A) electromagnetic radiation of various kinds. 
B) ordinary matter. 
C) dark matter. 
D) dark energy. 
A) electromagnetic radiation of various kinds. 
B) ordinary matter. 
C) dark matter. 
D) dark energy.

Question 13

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 14

Primary cosmic rays are characteristic phenomena of the

Accepted Answer

A) solar system. 
B) galaxy. 
C) regions between the galaxies. 
D) entire universe. 
A) solar system. 
B) galaxy. 
C) regions between the galaxies. 
D) entire universe.

Question 15

Galaxies

Accepted Answer

A) have a variety of shapes. 
B) are evenly distributed in space. 
C) are moving closer to one another. 
D) rarely contain more than one or two million stars. 
A) have a variety of shapes. 
B) are evenly distributed in space. 
C) are moving closer to one another. 
D) rarely contain more than one or two million stars.

Question 16

The number of planets outside the solar system that have thus far been detected is

Accepted Answer

A) 5. 
B) 9. 
C) 50. 
D) over 100. 
A) 5. 
B) 9. 
C) 50. 
D) over 100.

Question 17

Studies of the cosmic background radiation suggest that matter in the early universe

Accepted Answer

A) was uniformly distributed. 
B) had small irregularities that grew into today's galaxies. 
C) had large irregularities that grew into today's galaxies. 
D) formed spiral arms like those in today's galaxies. 
A) was uniformly distributed. 
B) had small irregularities that grew into today's galaxies. 
C) had large irregularities that grew into today's galaxies. 
D) formed spiral arms like those in today's galaxies.

Question 18

The Milky Way is a

Accepted Answer

A) globular duster. 
B) nearby galaxy. 
C) galaxy with the sun at its center. 
D) galaxy with the sun about 2/3 of the distance from its center. 
A) globular duster. 
B) nearby galaxy. 
C) galaxy with the sun at its center. 
D) galaxy with the sun about 2/3 of the distance from its center.

Question 19

The stars in the universe are

Accepted Answer

A) approximately evenly spaced. 
B) concentrated near its center. 
C) grouped in widely separated galaxies. 
D) irregularly distributed. 
A) approximately evenly spaced. 
B) concentrated near its center. 
C) grouped in widely separated galaxies. 
D) irregularly distributed.

Question 20

The proportionality between the recession speeds of the galaxies and their distances from the earth is known as

Accepted Answer

A) Hess's Law. 
B) Herschel's Law. 
C) Hubble's Law. 
D) Hersey's Law. 
A) Hess's Law. 
B) Herschel's Law. 
C) Hubble's Law. 
D) Hersey's Law.

Fast electrons that move through magnetic fields produce

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

Magnetic fields in our galaxy trap

Quasars

Galactic spectra show

In the universe today there

The galaxies in the universe are distributed

In the light of current evidence, a reasonable figure for the age of the universe is

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

All spiral galaxies apparently

Dark energy

Considering matter and energy together, the smallest component of the universe seems to be

The most distant galaxies are receding at speeds that are

Primary cosmic rays are characteristic phenomena of the

Galaxies

The number of planets outside the solar system that have thus far been detected is

Studies of the cosmic background radiation suggest that matter in the early universe

The Milky Way is a

The stars in the universe are

The proportionality between the recession speeds of the galaxies and their distances from the earth is known as

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: Universe

Fast electrons that move through magnetic fields produce

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

Magnetic fields in our galaxy trap

Quasars

Galactic spectra show

In the universe today there

The galaxies in the universe are distributed

In the light of current evidence, a reasonable figure for the age of the universe is

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

All spiral galaxies apparently

Dark energy

Considering matter and energy together, the smallest component of the universe seems to be

The most distant galaxies are receding at speeds that are

Primary cosmic rays are characteristic phenomena of the

Galaxies

The number of planets outside the solar system that have thus far been detected is

Studies of the cosmic background radiation suggest that matter in the early universe

The Milky Way is a

The stars in the universe are

The proportionality between the recession speeds of the galaxies and their distances from the earth is known as

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