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19 Cards in this Set
- Front
- Back
Day |
the time required for Earth to rotate once on its axis |
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Eclipse |
an event in which the shadow of one celestial body falls on another
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Equinox |
a moment when the sun appears to cross the celestial equator
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Gravity |
a force of attraction between objects that is due to their masses
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Low tide |
caused by the moon's gravitational pull on Earth's waters; occurs when waters are pulled away from areas between high tide
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Lunar cycle |
caused by the moon's orbit around Earth; process lasts about 28 days |
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Lunar phases |
the different appearances of the moon from Earth throughout the month
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Neap tide |
a tide of minimum range that occurs during the first and third quarters of the moon |
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Revolution |
the motion of a body that travels around another body in space; one complete trip along an orbit |
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Rotation |
the spin of a body on its axis
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Satellite |
a natural or artificial body that revolves around a celestial body that is greater in mass |
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Seasons |
a division of the year that is characterized by recurring weather conditions and determined by both Earth's tilt relative to the sun and Earth's position in its orbit around the sun |
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Solstice |
the point at which the sun is as far north or as far south of the equator as possible |
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Spring tide |
a tide of increased range that occurs two times a month, at the new and full moons
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Tidal range |
the difference in levels of ocean water at high tide and low tide |
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Tide |
the periodic rise and fall of the water level in the oceans and other large bodies of water
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Waning moon phases |
occurs when the moon goes back to a new moon and the sunlit part of the moon appears to grow smaller |
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Waxing moon phases |
occurs when the moon changes from a new moon to a full moon and the sunlit part of the moon appears to grow larger
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Year |
the time required for Earth to orbit once around the sun |
