Question 1

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 some distance from its center. 
A) globular duster. 
B) nearby galaxy. 
C) galaxy with the sun at its center. 
D) galaxy with the sun some distance from its center. D

Question 2

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. B

Question 3

Globular clusters of stars

Accepted Answer

A) are uniformly distributed throughout the universe. 
B) are uniformly distributed throughout our galaxy. 
C) are located above and below the central disk of our galaxy. 
D) are located in the central disk of our galaxy. 
A) are uniformly distributed throughout the universe. 
B) are uniformly distributed throughout our galaxy. 
C) are located above and below the central disk of our galaxy. 
D) are located in the central disk of our galaxy. C

Question 4

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 5

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 6

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 7

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.

Question 8

The sun is

Accepted Answer

A) a Population I star. 
B) a Population II star. 
C) different from Population I and II stars. 
D) a member of a globular cluster. 
A) a Population I star. 
B) a Population II star. 
C) different from Population I and II stars. 
D) a member of a globular cluster.

Question 9

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 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

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 12

Considering matter and energy together, the largest 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

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 14

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 15

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 16

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

Accepted Answer

A) about 20. 
B) about 100. 
C) several thousand. 
D) several million. 
A) about 20. 
B) about 100. 
C) several thousand. 
D) several million.

Question 17

Present evidence suggests that the universe

Accepted Answer

A) will expand forever. 
B) will eventually stop expanding and then remain a fixed size. 
C) will eventually stop expanding and then contract. 
D) has just begun to contract. 
A) will expand forever. 
B) will eventually stop expanding and then remain a fixed size. 
C) will eventually stop expanding and then contract. 
D) has just begun to contract.

Question 18

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 19

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 20

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.

The Milky Way is a

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

Globular clusters of stars

Galactic spectra show

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

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

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

The sun is

Galaxies

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

Molecules in space can be identified from their emissions of

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

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

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

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

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

Present evidence suggests that the universe

All spiral galaxies apparently

Primary cosmic rays are produced

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

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

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The Nucleus

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Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

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Exam 19: The Universe

The Milky Way is a

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

Globular clusters of stars

Galactic spectra show

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

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

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

The sun is

Galaxies

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

Molecules in space can be identified from their emissions of

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

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

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

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

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

Present evidence suggests that the universe

All spiral galaxies apparently

Primary cosmic rays are produced

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

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