Solar system pt2

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14 Terms

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Orbit

The path that a body follows a it travels around another body in space

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Momentum

A measure of how hard it is to stop a moving object

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Period of Rotation

The time it takes an object to complete on rotation

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Satellite

A moon, planet , or machine that orbits a planet or star

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Solar Nebula

The sun, all the planets, all of the smaller bodies in the solar system - including moons, asteroids, and meteors- formed from a swirling cloud of gas and dust

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Period of Revolution

The time it takes an object to travel once around the sun

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Elliptical orbit

An oval shaped path like a slightly elongated circle

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Gravity

A force of attraction between objects that is due to their masses

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Greenhouse Effect

The natural process that occurs when certain gases in the atmosphere absorb and radiate thermal energy from the sun.

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Extremophile

An organism that lives under extreme environmental conditions

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Ozone

A gas molecule that is made up of three oxygen atoms

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Atmosphere

A mixture of gases that surrounds a planet, moon, or other celestial body

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Ultraviolet

Electromagnetic wave frequencies immediately above the visible range.

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Habitable Zone

The area around a star where it is not too hot and not too cold for liquid water to exist on the surface of surrounding planets