The Solar System--Part 1 Question Preview (ID: 33939)


Solar System Review. TEACHERS: click here for quick copy question ID numbers.

All of the outer planets are mostly made of
a) water ice.
b) metal and rock.
c) gas and liquid around a solid core.
d)

Which planet is the solar system's largest?
a) Jupiter
b) Saturn
c) Uranus
d) Neptune

The outer planets have atmospheres composed mostly of
a) nitrogen and oxygen.
b) hydrogen and helium.
c) water vapor and carbon dioxide.
d)

All of the inner planets
a) have at least one moon.
b) have thick atmospheres.
c) are rocky and have a solid outer layer.
d)

Because Mercury's mass is so small, it
a) does not rotate.
b) has no atmosphere.
c) has a surface that is not solid.
d)

Why is Venus the hottest inner planet?
a) It is covered with liquid water.
b) It is the closest planet to the Sun.
c) Its atmosphere traps a lot of heat energy in a process known as the greenhouse effect.
d)

Earth is the only planet with a wide variety of life because of its
a) size and shape.
b) closeness to the Sun.
c) moderate temperature and liquid water.
d)

The planets in the solar system are so far apart that scientists measure the distances between them in
a) miles.
b) astronomical meters.
c) kilometers.
d) astronomical units.

Asteroids and comets are mainly rock and ice.
a) True
b) False
c)
d)

Which shape describes a planet's orbit?
a) a circle
b) an ellipse
c) a straight line
d)

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