Question 1

Which of the following can appear as disks with the help of a telescope?

Accepted Answer

A) planets 
B) main-sequence stars 
C) red giants 
D) supernovas 
A) planets 
B) main-sequence stars 
C) red giants 
D) supernovas A

Question 2

Binary stars are valuable to astronomers because they permit the determination of stellar

Accepted Answer

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

Question 3

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. B

Question 4

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 5

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 6

The less the mass of a main-sequence star, the

Accepted Answer

A) lower its density. 
B) cooler it is. 
C) brighter it is. 
D) shorter its lifetime. 
A) lower its density. 
B) cooler it is. 
C) brighter it is. 
D) shorter its lifetime.

Question 7

Solar storms may affect

Accepted Answer

A) the earth's magnetic field. 
B) electric transmission lines. 
C) shortwave radio reception. 
D) satellite electronics. 
E) All of the above 
A) the earth's magnetic field. 
B) electric transmission lines. 
C) shortwave radio reception. 
D) satellite electronics. 
E) All of the above

Question 8

White dwarf stars are not

Accepted Answer

A) comparable in size with the earth. 
B) comparable in mass with the sun. 
C) extremely hot. 
D) extremely bright. 
A) comparable in size with the earth. 
B) comparable in mass with the sun. 
C) extremely hot. 
D) extremely bright.

Question 9

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 10

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 11

If we know the surface temperature and intrinsic brightness of a star we can find its

Accepted Answer

A) mass. 
B) size. 
C) age. 
D) distance. 
A) mass. 
B) size. 
C) age. 
D) distance.

Question 12

Nuclear reactions in the sun's interior convert

Accepted Answer

A) hydrogen into helium. 
B) helium into hydrogen. 
C) carbon into nitrogen. 
D) uranium into plutonium. 
A) hydrogen into helium. 
B) helium into hydrogen. 
C) carbon into nitrogen. 
D) uranium into plutonium.

Question 13

The sun does not

Accepted Answer

A) have a magnetic field. 
B) have a solid core. 
C) revolve about an axis. 
D) consist largely of ions. 
A) have a magnetic field. 
B) have a solid core. 
C) revolve about an axis. 
D) consist largely of ions.

Question 14

The color of a relatively hot star is

Accepted Answer

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

Question 15

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 16

The interior of the sun consists of

Accepted Answer

A) liquid hydrogen. 
B) molecules. 
C) neutral atoms. 
D) ions. 
A) liquid hydrogen. 
B) molecules. 
C) neutral atoms. 
D) ions.

Question 17

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.

Question 18

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 19

A large modern astronomical telescope

Accepted Answer

A) is designed for high magnifications. 
B) uses a single lens. 
C) uses a single mirror. 
D) uses a number of smaller mirrors. 
A) is designed for high magnifications. 
B) uses a single lens. 
C) uses a single mirror. 
D) uses a number of smaller mirrors.

Question 20

The light the sun emits comes from

Accepted Answer

A) its interior. 
B) a thin gas layer at its surface. 
C) a thin liquid layer at its surface. 
D) a thin solid layer at its surface. 
A) its interior. 
B) a thin gas layer at its surface. 
C) a thin liquid layer at its surface. 
D) a thin solid layer at its surface.

Which of the following can appear as disks with the help of a telescope?

Binary stars are valuable to astronomers because they permit the determination of stellar

The smallest of the following celestial objects is

The earth's magnetic field influences

Auroras consist of

The less the mass of a main-sequence star, the

Solar storms may affect

White dwarf stars are not

The sun has

The majority of main-sequence stars are

If we know the surface temperature and intrinsic brightness of a star we can find its

Nuclear reactions in the sun's interior convert

The sun does not

The color of a relatively hot star is

Neutron stars are about

The interior of the sun consists of

Pulsars are unlikely to be

The two chief elements in the sun are

A large modern astronomical telescope

The light the sun emits comes from

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

Universe

Filters

Exam 18: The Stars

Which of the following can appear as disks with the help of a telescope?

Binary stars are valuable to astronomers because they permit the determination of stellar

The smallest of the following celestial objects is

The earth's magnetic field influences

Auroras consist of

The less the mass of a main-sequence star, the

Solar storms may affect

White dwarf stars are not

The sun has

The majority of main-sequence stars are

If we know the surface temperature and intrinsic brightness of a star we can find its

Nuclear reactions in the sun's interior convert

The sun does not

The color of a relatively hot star is

Neutron stars are about

The interior of the sun consists of

Pulsars are unlikely to be

The two chief elements in the sun are

A large modern astronomical telescope

The light the sun emits comes from

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

Universe

Filters