AnswersHOPE Scholars- Science Grade 8Planets

Planets Answers

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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.
2
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best

s
solid, smooth, giant
r
rocky, solid, dense
g
giant, dense, gaseous
g
gaseous, smooth, small
3

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.
A
All of the gas giants experience tectonic activity, but none of the terrestrial planets do.
A
All of the gas giants experience tectonic activity, but only one terrestrial planet has tectonic plates.
A
All of the terrestrial planets exhibit or have exhibited tectonic activity, but only one gas giant has.
4

Which two planets have more than 50 confirmed moons?

E
Earth and Mercury
J
Jupiter and Saturn
M
Mercury and Mars
N
Neptune and Jupiter
5

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
6

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.
7

Which phrase describes how Jupiter and Saturn are similar?

v
visible storms
s
slow rotations
m
many moons
f
fast revolutions
8

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

E
Earth
M
Mars
M
Mercury
V
Venus
9

In addition to hot surface temperatures, which characteristic makes Mercury different from Earth?

A
Mercury has rings.
B
Mercury has no moon.
C
Mercury has slow revolutions.
D
Mercury has an atmosphere of carbon dioxide.
10

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
11

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

n
no rotation, slow revolution
f
fast rotation, slow revolution
n
north-to-south rotation, slow revolution
n
no rotation, opposite revolution
12

How is Uranus similar to Jupiter?

I
It has rings.
I
It has no moons.
I
It has a rocky surface.
I
It has methane in its atmosphere.
13

Which statement describes the density of the inner planets?

A
All the inner planets are dense.
T
The inner planets are less dense than the outer planets.
E
Earth is dense, while the other inner planets are not.
M
Mercury and Venus are dense, while Earth and Mars are not.
14

Which statement describes the size of the inner planets?

A
All the inner planets, except Mercury, are large.
T
The inner planets are larger than the outer planets.
A
All the inner planets are smaller than the outer planets.
M
Mars is a large planet, while the other inner planets are small.
15

Which is one characteristic that Mars and Earth share?

r
rings
s
seasons
f
few clouds
a
active volcanoes

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