Question 1

If high tide is at noon, the next high tide will be at

Accepted Answer

A)   midnight.
B)   6 pm
C)   6 am
D)   noon tomorrow.

Question 2

Long canyons on the lunar surface are called ____.

Accepted Answer

A)   rilles
B)   rays
C)   maria
D)   rifts

Question 3

The Moon contains small amounts of frozen water that is mixed in with its rocks.

Accepted Answer

A) True 
 B)False  True

Question 4

The Moon is about one-quarter the diameter of Earth. How does its mass compare?

Accepted Answer

A)   The Moon is 1/4as massive as Earth.
B)   The Moon is 1/6as massive as Earth.
C)   The Moon is 1/32as massive as Earth.
D)   The Moon is 1/81as massive as Earth.

Question 5

What does the Moon's low density suggest about its internal structure?

Accepted Answer

A)   The Moon's iron core is smaller relative to Earth's.
B)   The lunar interior has not differentiated.
C)   The lunar mantle extends to the center of the Moon.
D)   The Moon's crust is very thick and poor in iron.

Question 6

The distance between Earth and the Moon

Accepted Answer

A)   remains constant as the Moon orbits about Earth.
B)   varies as the Moon orbits about Earth. B

Question 7

How do we most accurately measure the distance to the Moon?

Accepted Answer

A)   We measure the lunar period and use Kepler's Third Law.
B)   We bounce a pulse of light off the lunar surface and measure how long the trip takes.
C)   We know how long it took Apollo astronauts to get there, and how fast the rocket traveled.
D)   We measure its angular size and compare it to its actual diameter, which gives us its distance.
E)   All of these choices provide equally accurate measurements.

Question 8

Rilles on the lunar surface were formed by __________________.

Accepted Answer

A)   the flow of ancient rivers
B)   ancient lava flows
C)   the impact of small asteroids
D)   ancient volcano chains

Question 9

How will high tides differ from their average values when the Moon is in its full phase?

Accepted Answer

A)   They will be higher than average.
B)   They will be lower than average.
C)   They will not differ from average values significantly.
D)   There are no high tides when the Moon is full. A

Question 10

The primary reason the Moon lacks an atmosphere is because

Accepted Answer

A)   the Moon is made up of the wrong kinds of rocks to release atmospheric gases.
B)   Earth's gravity pulls away any atmosphere the Moon collects.
C)   the Moon lacks sufficient gravity to retain an atmosphere.
D)   there is no life on the Moon.

Question 11

Planetary scientists believe that the Moon was most likely a nearby small planet gravitationally captured by Earth.

Accepted Answer

A) True 
 B)False

Question 12

The lunar highlands are composed primarily of ____.

Accepted Answer

A)   anorthosite
B)   basalt
C)   olivine
D)   silicon dioxide

Question 13

The majority of lunar craters formed when _________.

Accepted Answer

A)   lunar volcanoes erupted
B)   solid bodies such as asteroids impacted the Moon's surface
C)   pieces of the Moon fell off, leaving holes in its surface
D)   tidal forces from Earth cracked the Moon's surface

Question 14

Basalt, a dense congealed lava rock rich in iron, is the primary material in the Moon's

Accepted Answer

A)   highlands.
B)   crust.
C)   maria.
D)   far side's regolith.

Question 15

If the Moon were farther from Earth, compared to now, the tides would be

Accepted Answer

A)   about the same as now.
B)   neap tides would be shallower, and spring tides would be taller than now.
C)   less tall all the time.
D)   higher all the time.

Question 16

The differential gravitational force of the Moon on Earth is the cause of ____.

Accepted Answer

A)   tides
B)   precession
C)   phases
D)   the Coriolis force
E)   seasons

Question 17

How will high tides differ from their average values when the Moon and the Sun are on opposite sides of Earth?

Accepted Answer

A)   They will be higher than average.
B)   They will be lower than average.
C)   They will not differ from average values significantly.
D)   There are no high tides when the Moon and Sun pull in opposite directions.

Question 18

Solar tides are not as strong as lunar tides mostly because the Sun is much farther away than the Moon.

Accepted Answer

A) True 
 B)False

Question 19

Scientists recently confirmed the presence of water ice at the poles of the Moon. Where did this water come from?

Accepted Answer

A)   The ice is all that remains of the Moon's polar ice caps, present in the Moon's early history.
B)   Water was deposited on the Moon by cometary impacts, and it condensed in deep polar craters.
C)   Early lunar oceans evaporated quickly, and the water vapor condensed in deep polar craters.
D)   The water is released as polar region crust stretches due to tidal forces from Earth.
E)   None of these choices are correct.

Question 20

How will high tides differ from their average values when the Moon is in its new phase?

Accepted Answer

A)   They will be higher than average.
B)   They will be lower than average.
C)   They will not differ from average values significantly.
D)   There are no high tides when the Moon is new.

Exam 7: The Moon

If high tide is at noon, the next high tide will be at

Correct AnswerverifiedShow Answer

Long canyons on the lunar surface are called ____.

Correct AnswerverifiedShow Answer

The Moon contains small amounts of frozen water that is mixed in with its rocks.

Correct AnswerverifiedTrue

The Moon is about one-quarter the diameter of Earth. How does its mass compare?

Correct AnswerverifiedShow Answer

What does the Moon's low density suggest about its internal structure?

Correct AnswerverifiedShow Answer

The distance between Earth and the Moon

Correct AnswerverifiedB

How do we most accurately measure the distance to the Moon?

Correct AnswerverifiedShow Answer

Rilles on the lunar surface were formed by __________________.

Correct AnswerverifiedShow Answer

How will high tides differ from their average values when the Moon is in its full phase?

Correct AnswerverifiedA

The primary reason the Moon lacks an atmosphere is because

Correct AnswerverifiedShow Answer

Planetary scientists believe that the Moon was most likely a nearby small planet gravitationally captured by Earth.

Correct AnswerverifiedShow Answer

The lunar highlands are composed primarily of ____.

Correct AnswerverifiedShow Answer

The majority of lunar craters formed when _________.

Correct AnswerverifiedShow Answer

Basalt, a dense congealed lava rock rich in iron, is the primary material in the Moon's

Correct AnswerverifiedShow Answer

If the Moon were farther from Earth, compared to now, the tides would be

Correct AnswerverifiedShow Answer

The differential gravitational force of the Moon on Earth is the cause of ____.

Correct AnswerverifiedShow Answer

How will high tides differ from their average values when the Moon and the Sun are on opposite sides of Earth?

Correct AnswerverifiedShow Answer

Solar tides are not as strong as lunar tides mostly because the Sun is much farther away than the Moon.

Correct AnswerverifiedShow Answer

Scientists recently confirmed the presence of water ice at the poles of the Moon. Where did this water come from?

Correct AnswerverifiedShow Answer

How will high tides differ from their average values when the Moon is in its new phase?

Correct AnswerverifiedShow Answer

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