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14 Cards in this Set
- Front
- Back
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What covers almost 3/4 of the planet earth?
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oceans
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What is a sattelite?
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Something that orbits a planet
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What holds the planets in their orbit?
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gravity
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What is the solar system?
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The sun,planets and moons and the objects that orbit the planets.
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What is an atmosphere?
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It is and invisible layer of gases over a planet.
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What are the planets(in order from the nearest to the farthers from the sun)?
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Mercuery, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto
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What is a galaxy?
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A large group of stars held together by gravity.
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What is gravity?
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It is an invisible force that pulls objects together.
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What is geology?
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The study of the Earth.
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How long does it take the Earth to travel around the sun?
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One year
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What is an axis?
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An imaginary line that runs through the center of the Earth form pole to pole.
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What planet is covered with a thick layer of clouds made up of poisonous gas?
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Venus
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What planet is three times closer to the sun than Earth?
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Mercury
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What is and Astroid?
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chuncks of rock and metal
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