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Planets Answers

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Which statement best describes the size of the outer planets?

A
All the outer planets are large.
B
All the outer planets, except Saturn, are large.
C
The inner planets are larger than the outer planets.
D
Jupiter is a large planet, while the other outer planets are small.
2
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Which characteristic do Venus and Earth share?

A
same direction of rotation
B
similar size, mass, and density
C
slow revolution period around the Sun
D
atmosphere composed only of carbon dioxide
3

Which statement describes the size of the inner planets?

A
All the inner planets, except Mercury, are large.
B
The inner planets are larger than the outer planets.
C
All the inner planets are smaller than the outer planets.
D
Mars is a large planet, while the other inner planets are small.
4

Which planet is the smallest and the closest to the Sun?

A
Earth
B
Mars
C
Mercury
D
Venus
5

Which two planets have more than 50 confirmed moons?

A
Earth and Mercury
B
Jupiter and Saturn
C
Mercury and Mars
D
Neptune and Jupiter
6

Which statement best describes the density of the outer planets?

A
All the outer planets have low density.
B
The outer planets are denser than the inner planets.
C
Saturn is dense, but the other outer planets are not.
D
Uranus and Neptune are dense, but Jupiter and Saturn are not.
7

Which phrase describes how Jupiter and Saturn are similar?

A
visible storms
B
slow rotations
C
many moons
D
fast revolutions
8

Which two planets are called "ice giants”?

A
Jupiter and Venus
B
Neptune and Uranus
C
Saturn and Jupiter
D
Uranus and Saturn
10

How does the tectonic activity of the terrestrial planets compare with that of the gas giants?

A
All of the terrestrial planets exhibit or have exhibited tectonic activity, but none of the gas giants have.
B
All of the gas giants experience tectonic activity, but none of the terrestrial planets do.
C
All of the gas giants experience tectonic activity, but only one terrestrial planet has tectonic plates.
D
All of the terrestrial planets exhibit or have exhibited tectonic activity, but only one gas giant has.
11

Which statement accurately describes the atmospheres of the inner planets?

A
Mars has no atmosphere.
B
Mercury has a thick atmosphere.
C
The atmospheres of Mars and Venus are similar in composition.
D
The atmospheres of Earth and Venus are similar in composition.
12

How is Uranus similar to Jupiter?

A
It has rings.
B
It has no moons.
C
It has a rocky surface.
D
It has methane in its atmosphere.
13

Which two phrases describe the motion of all the outer planets?

A
no rotation, slow revolution
B
fast rotation, slow revolution
C
north-to-south rotation, slow revolution
D
no rotation, opposite revolution
14

Which is one characteristic that Mars and Earth share?

A
rings
B
seasons
C
few clouds
D
active volcanoes
15

Which phrase best describes the outer planets?

A
rocky with few moons
B
gaseous with slow rotations
C
dense with few moons
D
gaseous with low density
16

Which statement describes the density of the inner planets?

A
All the inner planets are dense.
B
The inner planets are less dense than the outer planets.
C
Earth is dense, while the other inner planets are not.
D
Mercury and Venus are dense, while Earth and Mars are not.
17

Which three words best describe the composition of the inner planets?

A
solid, smooth, giant
B
rocky, solid, dense
C
giant, dense, gaseous
D
gaseous, smooth, small

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