Question 1

The Earth rotates about its axis once per 24 hours, while the Moon rotates about its axis once per

Accepted Answer

A)  24 hours also.
B)  half month.
C)  month.
D)  year.
E)  none of theseF) C) and D)
G) All of the above

Question 2

Why do comet's tails always point away from the Sun?

Accepted Answer

A)  Because of solar wind.
B)  Because the inner planets cause the ice and other volatile materials to be pulled towards their orbits.
C)  Because of the comet's interaction with dark matter.
D)  Because when they move away from the Sun they begin to lose inertia.E) A) and D)
F) None of the above

Question 3

The solar wind blows in a direction

Accepted Answer

A)  away from the Sun.
B)  toward the Sun.
C)  coplanar to the plane of the solar system
D)  primarily along the Sun's polar axisE) B) and D)
F) All of the above

Question 4

When the alignment of the Sun, the Moon, and Earth produce a lunar eclipse, the body that is in between the other two is the

Accepted Answer

A)  Sun.
B)  Moon.
C)  Earth.D) A) and C)
E) None of the above

Question 5

Pretend you are on a morning time mission on the surface of Venus. When looking out the spacepod window you are likely to see

Accepted Answer

A)  the Sun rising in the West.
B)  the Sun rising in the East.
C)  fierce windstorms everywhere you look.
D)  thick and still smog-like cloud cover.E) A) and B)
F) A) and C)

Question 6

About how many tons of meteorites strike the Earth on a daily basis?

Accepted Answer

A)  20 tons
B)  200 tons
C)  2,000 tons
D)  20,000 tonsE) None of the above
F) A) and D)

Question 7

The age of the Sun is about

Accepted Answer

A)  7000 years.
B)  5.5 million years.
C)  5.5 billion years.
D)  5.5 trillion years.
E)  more than 5.5 trillion yearsF) A) and E)
G) A) and B)

Question 8

When the alignment of the Sun, the Moon, and Earth produce a solar eclipse, the body between the other two is the

Accepted Answer

A)  Sun.
B)  Moon.
C)  Earth.D) A) and C)
E) A) and B)

Question 9

Nebular theory pertains to the formation of

Accepted Answer

A)  the solar system.
B)  a galaxy.
C)  the asteroid belt.
D)  the Earth.E) A) and D)
F) All of the above

Question 10

Each second, the burning Sun's mass

Accepted Answer

A)  decreases.
B)  increases.
C)  remains unchanged.D) B) and C)
E) A) and C)

Question 11

The core of the Moon is

Accepted Answer

A)  solid.
B)  liquid.
C)  gaseous.
D)  Not enough information is known for an answer.E) All of the above
F) B) and C)

Question 12

Like Jupiter and Saturn, Neptune emits about 2.5 times as much heat energy as it receives from the Sun, although calculations show it should have already lost all of its original heat. What is the most likely explanation?

Accepted Answer

A)  Unlike Uranus, it is still contracting.
B)  Radioactive decay has kicked into overdrive, with runaway reactions taking place.
C)  The basis for these calculations is currently being questioned by a new generation of scientists.
D)  There are gravitational anomalies taking place, which may hold some clue as to where the heat may be coming from.
E)  Uranus' gravity is creating a 'slingshot' effect, catapulting solar winds into Neptune's atmosphere in the form of as of yet undetected radiation.F) D) and E)
G) A) and B)

Question 13

Compared to the density of water, the density of Saturn is

Accepted Answer

A)  less.
B)  more.
C)  about the same.D) All of the above
E) B) and C)

Question 14

How do the wind speeds of the Martian atmosphere compare with those of Earth?

Accepted Answer

A)  About the same as Earth's
B)  About one tenth of Earth's
C)  About 50% of Earth's
D)  About ten times more than Earth'sE) A) and B)
F) A) and C)

Question 15

When the Sun passes between the Moon and the Earth, we have

Accepted Answer

A)  a solar eclipse.
B)  a lunar eclipse.
C)  met our end.D) None of the above
E) All of the above

Question 16

Neptune was discovered by irregularities in the orbit of

Accepted Answer

A)  Jupiter.
B)  Saturn.
C)  Uranus.
D)  Pluto.
E)  Earth.F) All of the above
G) A) and E)

Question 17

A spinning cloud of interstellar gas tends to

Accepted Answer

A)  disperse.
B)  flatten.
C)  turn into a sphere.
D)  condense.E) A) and D)
F) None of the above

Question 18

The gravity lock of the Moon to Earth is similar to the action of a

Accepted Answer

A)  tidal wave.
B)  giant pendulum.
C)  master key.
D)  magnetic compass.
E)  spinning top.F) B) and E)
G) A) and C)

Question 19

The Sun tends to bloat outward by nuclear fusion, and contract due to

Accepted Answer

A)  gravitation.
B)  nuclear fission.
C)  mass decrease.
D)  its relatively slow spin.
E)  reduced gaseous pressures.F) A) and E)
G) All of the above

Question 20

The percentage of the Earth's surface covered by ocean is about

Accepted Answer

A)  50%.
B)  60%.
C)  70%.
D)  80%.
E)  85%.F) A) and E)
G) A) and B)

Exam 26: The Solar System

Compared to the density of water, the density of Saturn is

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How do the wind speeds of the Martian atmosphere compare with those of Earth?

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Pretend you are on a morning time mission on the surface of Venus. When looking out the spacepod window you are likely to see

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The solar wind blows in a direction

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When the alignment of the Sun, the Moon, and Earth produce a solar eclipse, the body between the other two is the

Correct AnswerverifiedShow Answer

Each second, the burning Sun's mass

Correct AnswerverifiedShow Answer

When the Sun passes between the Moon and the Earth, we have

Correct AnswerverifiedShow Answer

Neptune was discovered by irregularities in the orbit of

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The gravity lock of the Moon to Earth is similar to the action of a

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The Earth rotates about its axis once per 24 hours, while the Moon rotates about its axis once per

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When the alignment of the Sun, the Moon, and Earth produce a lunar eclipse, the body that is in between the other two is the

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Like Jupiter and Saturn, Neptune emits about 2.5 times as much heat energy as it receives from the Sun, although calculations show it should have already lost all of its original heat. What is the most likely explanation?

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Why do comet's tails always point away from the Sun?

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The Sun tends to bloat outward by nuclear fusion, and contract due to

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The age of the Sun is about

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The percentage of the Earth's surface covered by ocean is about

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A spinning cloud of interstellar gas tends to

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About how many tons of meteorites strike the Earth on a daily basis?

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The core of the Moon is

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Nebular theory pertains to the formation of

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