Earth and Space Vocabulary
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10 Terms
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horizon
the line at which the earth's surface and the sky appear to meet
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navigate
plan and direct the route or course of a ship, aircraft, or other form of transportation, especially by using instruments or maps
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sphere
a round solid figure
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equator
an imaginary line dividing the earth into northern and southern hemispheres
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gravity
the force that attracts a body toward the center of the earth
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axis
an imaginary line around which an object rotates
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rotation
the circular movement of an object around a central axis
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revolution
the movement of an object around another
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altitude
the apparent height of an object above the horizon
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constellation
a group of stars in the sky, usually named after some object, animal, or mythological being
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