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10 Cards in this Set
- Front
- Back
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Sidereal month |
time it takes for the moon to complete one revolution around earth and return to the same position among the stars (27.3 days) |
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Synodic or Lunar Month |
the time it takes from new moon to new moon (29.5 days) |
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Solar Eclipse |
when the moon blocks the sun, or part of it |
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Lunar Eclipse |
when the earth casts a shadow on the moon |
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Revolution |
motion of the moon around the earth is called |
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Geocentric Model |
early belief that the earth was motionless and everything revolved around it |
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Heliocentric Model |
sun centered model |
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The Solar System |
complex system of moving masses held together by gravitational forces |
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Parallax |
the apparent motion, or shift, that occurs between two fixed objects when the observer changes position |
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Aberration of Starlight |
telescopic observations of a systematic change in the position of all stars annually |
