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Vocabulary: Space. gravity a natural force that attracts any 2 objects; the pull of the Earth (or moon) on objects at or near its surface. weight the heaviness of an object; a product of its mass and the force of gravity affecting it. mass a measure of the amount of matter in an object.
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gravitya natural force that attracts any 2 objects; the pull of the Earth (or moon) on objects at or near its surface
weightthe heaviness of an object; a product of its mass and the force of gravity affecting it
Cratersbowl-shaped structures on the surface of a planet or moon caused by the impact of meteorites
Orbitthe path one object takes as it revolves around another object in space