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Science related flash cards

Gravity A physical force of nature that causes two bodies to attract each other.
Force A push or pull upon an object resulting from the interaction with another object.
Galaxy A grouping of billions of stars. Ours is known as the Milky Way.
Universe All existing matter and space considered as a whole.
Asteroid A small planetary body in orbit around the Sun, larger than a meteoroid but smaller than a planet.
Comet A gigantic ball of ice and rock that orbit the Sun.
Meteor A small particle of rock or dust that burns away in the Earth's atmosphere.
Inner Planets The 4 closest planets to the sun: Mercury, Venus, Earth, and Mars.
Outer Planets The 4 farthest planets from the sun, also known as the gas giants: Jupiter, Saturn, Uranus, and Neptune
Orbit The path of a celestial body as it moves through space.
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