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20 Cards in this Set
- Front
- Back
|
Word |
Definition
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Orbit |
curved path of one object around another object in space
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Nebula
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a cloud of gas and dust in space
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solar system
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The Sun and all objects that orbit it.
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Ellipse
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flattened circel or oval
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periherlion
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point in a planet's orbit where it is closest to the sun
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Aphelion
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point in a planet's orbit where it is farthest away from the sun
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Mare
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broad flat plain on the moons surface
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crater
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Round hole on the Moon's surface.
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Satellite
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natural or arificial object orbiting around another body in space
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Rift
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valley caused by a crack in the crust of a planet
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Asteroid
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a large chunk of rock or matal that orbits the sun
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Meteoroid
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small piece of rock or metal that travels through space
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Meteorite
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piece of rock or metal that falls on a planet or moon's surface
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asteroid
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Rock or metal that enters Earth's atmosphere.
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Dwarf planets
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small, planet like objects that orbit the sun and share their orbits with similar objects
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Comet
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lump of ice, frozen gas, and dust that orbits the sun
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Tail
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long, ribbonlike trail of comet dust and gas
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Coma
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gas cloud that surrounds the nucleus of a comet
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nucleus
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Head or solid part of a comet. |
