Question 1

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.

Question 2

The stars in globular clusters

Accepted Answer

A) are relatively close together. 
B) have an average spacing like that of stars in the galactic disk. 
C) are relatively far apart. 
D) form spiral arms. 
A) are relatively close together. 
B) have an average spacing like that of stars in the galactic disk. 
C) are relatively far apart. 
D) form spiral arms.

Question 3

The cosmic background radiation today

Accepted Answer

A) is present only in galaxies. 
B) is present everywhere in the universe. 
C) accounts for less of the radiation in the universe than starlight. 
D) is visible as a faint glow in the sky on dark nights. 
A) is present only in galaxies. 
B) is present everywhere in the universe. 
C) accounts for less of the radiation in the universe than starlight. 
D) is visible as a faint glow in the sky on dark nights.

Question 4

The number of galaxies in the universe seems to be about

Accepted Answer

A) 200. 
B) 200,000. 
C) 200 million. 
D) 200 billion. 
A) 200. 
B) 200,000. 
C) 200 million. 
D) 200 billion.

Question 5

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 6

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 7

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.

Question 8

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 9

The heavy elements in the earth were formed in

Accepted Answer

A) the sun. 
B) the big bang. 
C) supernova explosions. 
D) white dwarfs. 
A) the sun. 
B) the big bang. 
C) supernova explosions. 
D) white dwarfs.

Question 10

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.

The individual stars we can see with the unaided eyes

The stars in globular clusters

The cosmic background radiation today

The number of galaxies in the universe seems to be about

Our galaxy is shaped roughly like a

A source of radio waves from space is

The stars in our galaxy

The most distant galaxies are receding at speeds that are

The heavy elements in the earth were formed in

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

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

The individual stars we can see with the unaided eyes

The stars in globular clusters

The cosmic background radiation today

The number of galaxies in the universe seems to be about

Our galaxy is shaped roughly like a

A source of radio waves from space is

The stars in our galaxy

The most distant galaxies are receding at speeds that are

The heavy elements in the earth were formed in

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

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