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11 Cards in this Set

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  • Back
Mass
The amount of material that an object contains.
Asteroid Belt
The region between Mars and Jupiter where most asteroids orbit the sun.
Atmosphere
An envolope of gas surrounding a body in space.
Asteroid
a rocky object smaller then a planet that orbits a star.
Comet
A ball of ice, rock, frozen gases, and dust that orbits the sun.
Greenhouse effect
the warming of the atmosphere because of trapped heat energy from the sun.
Meteor
An asteroid that enters the earth's atmosphere.
Planet
A large body in space that orbits a star such as the sun.
Sunspot
Dark area of the sun's surface that gives off less energy than the rest of the sun.
Solar System
a star, such as the sun, and all bodies that revolve around it in space.
Star
A glowing ball of hot gas that makes its own energy and light.