AnswersHOPE Scholars- Science Grade 8Planets

Planets Answers

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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.
2
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Which planet is the smallest and the closest to the Sun?

A
Earth
B
Mars
C
Mercury
D
Venus
3

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.
4

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.
5

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
6

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
7

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
8

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.
9

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
10

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.

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