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Applying the Concepts
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1

The belt of asteroids between Mars and Jupiter is probably
A)the remains of a planet that exploded.
B)clumps of matter that condensed from the accretion disk, but never got together as a planet.
C)the remains of two planets that collided.
D)the remains of a planet that collided with an asteroid or comet.
2

Comparing the amount of interior heating and melting that has taken place over time, the smaller planets underwent
A)more heating and melting because they are smaller.
B)the same heating and melting as larger planets.
C)less heating and melting for a shorter period of time.
D)There is no evidence to answer this question.
3

Which of the following planets would be mostly composed of hydrogen, helium, and methane and have a density of less than 2 g/cm3?
A)Uranus
B)Mercury
C)Mars
D)Venus
4

Which of the following planets probably still has its original atmosphere?
A)Mercury
B)Venus
C)Mars
D)Jupiter
5

Of the following planets, which has odd orbital properties compared to the other planets?
A)Jupiter
B)Saturn
C)Neptune
D)Pluto
6

Venus appears the brightest when it is in the
A)full phase.
B)half phase.
C)quarter phase.
D)crescent phase.
7

Which of the following planets has a rotation period (day) longer than its revolution period (year)?
A)Venus
B)Jupiter
C)Mars
D)None of the above is correct.
8

The largest planet is
A)Saturn.
B)Jupiter.
C)Uranus.
D)Neptune.
9

The small body with a composition and structure closest to the materials that condensed from the accretion disk is a (an)
A)asteroid.
B)meteorite.
C)comet.
D)None of the above is correct.
10

A small body from space that falls on the surface of Earth is a
A)meteoroid.
B)meteor.
C)meteor shower.
D)meteorite.





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