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18 Cards in this Set
- Front
- Back
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Hemisphere |
Half of a Sphere |
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Equator |
Line of latitude that divides the earth into north and south hemispheres; measures 0 degrees |
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Prime Meridian |
Line of longitude that divided the earth into east and west hemispheres; measure 0 degrees |
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gravity |
attraction of bodies to each other with a force proportional to their masses |
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rotation |
motion of the earth spinning on its axis |
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axis of rotation |
imaginary line that runs from the North Pole to the South Pole through the center of the earth |
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coriolis effect |
the apparent deflection of a freely moving object such as water or air because of earth's rotation |
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equinox |
when the sun is directly above the equator |
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solstice |
when the sun is closest to one of the poles |
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summer solstice |
when the sun is directly above the Tropic of Cancer; longest day in the northern hemisphere and shortest day in the southern hemisphere |
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winter solstice |
when the sun is directly above the Tropic of Capricorn; shortest day in the northern hemisphere and longest day in the southern hemisphere |
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revolution |
Earth's movement around the sun in an orbital path |
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solar eclipse |
when the moon's shadow blocks the sun from earth |
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lunar eclipse |
when a full moon moves through earth's shadow |
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crescent moon |
moon is less than half lit |
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full moon |
side of moon facing earth is fully lit |
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gibbous moon |
moon is more than half lit |
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new moon |
side of moon facing earth is completely dark |
