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11 Cards in this Set

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  • Back
atmosphere
an envelope of gas surrounding a body in space.
planet
a large body in space that orbits a star such as the sun.
meteor
an asteroid that enters the earth's atmosphere.
greenhouse effect
the warning of the atmosphere because of trapped heat energy from the sun.
comet
a ball of ice, rock, frozen gases, and dust that orbits the sun.
asteroid belt
the region between Mars and Jupiter where most asteroids orbit the sun.
asteriod
a rocky object smaller than a planet that orbits a star
solar system
a star such as the sun, and all the bodies that revolve around it in space.
mass
the amount of material that an object contains.
sunspot
dark area of the sun's surface that gives off less energy than the rest of the sun
star
a glowing ball of her gas that makes its own energy and light.