Question 1

A supernova explosion may leave behind a

Accepted Answer

A)  neutron star. 
B)  white dwarf. 
C)  red dwarf. 
D)  red giant. 
A)  neutron star. 
B)  white dwarf. 
C)  red dwarf. 
D)  red giant. A

Question 2

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. B

Question 3

The temperature of the sun's photosphere is about

Accepted Answer

A)  600 K. 
B)  6000 K. 
C)  14 million K. 
D)  14 billion K. 
A)  600 K. 
B)  6000 K. 
C)  14 million K. 
D)  14 billion K. B

Question 4

There is a surprisingly small variation among stellar

Accepted Answer

A)  temperatures. 
B)  diameters. 
C)  densities. 
D)  masses. 
A)  temperatures. 
B)  diameters. 
C)  densities. 
D)  masses.

Question 5

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 6

The sun is an)

Accepted Answer

A)  unusually small star. 
B)  unusually large star. 
C)  unusually hot star. 
D)  rather ordinary star. 
A)  unusually small star. 
B)  unusually large star. 
C)  unusually hot star. 
D)  rather ordinary star.

Question 7

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 8

Cepheid variable stars

Accepted Answer

A)  are very bright, easily seen stars. 
B)  have luminosities related to their periods of variation. 
C)  have very short periods of variation. 
D)  all lie in the constellation Cepheus. 
A)  are very bright, easily seen stars. 
B)  have luminosities related to their periods of variation. 
C)  have very short periods of variation. 
D)  all lie in the constellation Cepheus.

Question 9

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 10

At the end of its period in the main sequence, a very heavy star

Accepted Answer

A)  breaks up into several smaller stars. 
B)  cools down into a white dwarf. 
C)  expands into a red giant. 
D)  explodes into a supernova. 
A)  breaks up into several smaller stars. 
B)  cools down into a white dwarf. 
C)  expands into a red giant. 
D)  explodes into a supernova.

Question 11

The sun has

Accepted Answer

A)  no atmosphere. 
B)  an atmosphere just above its surface only. 
C)  an atmosphere that extends only as far as the earth. 
D)  an atmosphere that extends well out into the solar system. 
A)  no atmosphere. 
B)  an atmosphere just above its surface only. 
C)  an atmosphere that extends only as far as the earth. 
D)  an atmosphere that extends well out into the solar system.

Question 12

The majority of main-sequence stars are

Accepted Answer

A)  blue. 
B)  white. 
C)  yellow. 
D)  red. 
A)  blue. 
B)  white. 
C)  yellow. 
D)  red.

Question 13

Advantages of a telescope in a spacecraft do not include

Accepted Answer

A)  the absence of an atmosphere to affect light from space. 
B)  the absence of background radiation from the earth that may swamp faint signals from space. 
C)  less cost. 
D)  the ability to see the entire sky. 
A)  the absence of an atmosphere to affect light from space. 
B)  the absence of background radiation from the earth that may swamp faint signals from space. 
C)  less cost. 
D)  the ability to see the entire sky.

Question 14

The two chief elements in the sun are

Accepted Answer

A)  hydrogen and helium. 
B)  hydrogen and oxygen. 
C)  oxygen and nitrogen. 
D)  carbon and iron. 
A)  hydrogen and helium. 
B)  hydrogen and oxygen. 
C)  oxygen and nitrogen. 
D)  carbon and iron.

Question 15

Advantages of large reflecting telescopes include their ability to

Accepted Answer

A)  better resolve objects close together in the sky. 
B)  gather more light from faint objects. 
C)  be modified to correct for flickering images due to atmospheric turbulence. 
D)  All of these choices. 
A)  better resolve objects close together in the sky. 
B)  gather more light from faint objects. 
C)  be modified to correct for flickering images due to atmospheric turbulence. 
D)  All of these choices.

Question 16

The earth's magnetic field influences

Accepted Answer

A)  comets. 
B)  meteoroids. 
C)  eclipses. 
D)  auroras. 
A)  comets. 
B)  meteoroids. 
C)  eclipses. 
D)  auroras.

Question 17

Neutron stars are about

Accepted Answer

A)  the size of a large house. 
B)  20 km in diameter. 
C)  the size of the moon. 
D)  the size of Jupiter. 
A)  the size of a large house. 
B)  20 km in diameter. 
C)  the size of the moon. 
D)  the size of Jupiter.

Question 18

Auroras consist of

Accepted Answer

A)  colored clouds. 
B)  comet tails. 
C)  excited gases in the lower atmosphere. 
D)  excited gases in the upper atmosphere. 
A)  colored clouds. 
B)  comet tails. 
C)  excited gases in the lower atmosphere. 
D)  excited gases in the upper atmosphere.

Question 19

The smallest of the following celestial objects is

Accepted Answer

A)  a white dwarf. 
B)  a neutron star. 
C)  a planetary nebula. 
D)  the earth. 
A)  a white dwarf. 
B)  a neutron star. 
C)  a planetary nebula. 
D)  the earth.

Question 20

Pulsars are unlikely to be

Accepted Answer

A)  small in size. 
B)  in rapid rotation. 
C)  composed largely of neutrons. 
D)  members of the main sequence. 
A)  small in size. 
B)  in rapid rotation. 
C)  composed largely of neutrons. 
D)  members of the main sequence.

A supernova explosion may leave behind a

Red giant stars

The temperature of the sun's photosphere is about

There is a surprisingly small variation among stellar

The least common of the following are

The sun is an)

Streams of protons and electrons from the sun do not affect

Cepheid variable stars

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

At the end of its period in the main sequence, a very heavy star

The sun has

The majority of main-sequence stars are

Advantages of a telescope in a spacecraft do not include

The two chief elements in the sun are

Advantages of large reflecting telescopes include their ability to

The earth's magnetic field influences

Neutron stars are about

Auroras consist of

The smallest of the following celestial objects is

Pulsars are unlikely to be

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Nucleus

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The Periodic Law

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Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

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Exam 18: The Stars

A supernova explosion may leave behind a

Red giant stars

The temperature of the sun's photosphere is about

There is a surprisingly small variation among stellar

The least common of the following are

The sun is an)

Streams of protons and electrons from the sun do not affect

Cepheid variable stars

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

At the end of its period in the main sequence, a very heavy star

The sun has

The majority of main-sequence stars are

Advantages of a telescope in a spacecraft do not include

The two chief elements in the sun are

Advantages of large reflecting telescopes include their ability to

The earth's magnetic field influences

Neutron stars are about

Auroras consist of

The smallest of the following celestial objects is

Pulsars are unlikely 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 Universe Galaxies

Filters