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Direction: For each item, encircle the letter of the correct answer.
1. Most of the asteroids orbit the sun in a belt between the orbits of
A. Venus and Mars
C. Jupiter and Saturn
B. Mars and Earth
D. Mars and Jupiter
2. The primary chemical constituent of comets is
A water
C. methane
B. nitrogen
D. carbon dioxide
3. A meteorite is
A a rock from space that strikes the ground
B. a piece of rock passing through the earth's atmosphere
C. the trail left by a rock as it passes through the earth's atmosphere
D. all of the above
4. A meteor shower occurs when
A. a meteor is about to get married
B. the earth passes through the asteroid belt
C. the head of a comet hits the earth's atmosphere
D. the earth passes through a swarm of dust particles in space, the remnants of a
comet, once a year
5. The asteroids are
A. miniature planets
C. pockets of gas in the solar system
B. satellites of planets
D. planets orbiting the stars other than the sun
6. Why are meteorites and comets important in studying the origin of the solar system?
A. They have recently formed themselves.
B. They are recently produced fragments of planets.
C. They represent the material which formed the planets.
D. none of the above
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ANSWER:
1.D Mars and jupiter
2.A water
3.D all of the above
4.B the earth passess through the asteriod belt
5.A miniature planets
6.D none of the above