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Earth-Moon-Sun

The Earth-Moon-Sun Systems

TermDefinition
Day the time required for Earth to rotate once on its axis
Eclipse an event in which the shadow of one celestial body falls on another
Equinox the moment when the sun appears to cross the celestial equator
Gravity a force of attraction between objects that is due to their masses
Lunar Phases the different appearances of the moon throughout the month
Neap Tide a tide of minimum range that occurs during the first and third quarters of the moon
Penumbra the outer part of a shadow such as the shadow cast by Earth or the moon in which sunlight is only partially blocked
Revolution the motion of a body that travels around another body in space; one complete trip along an orbit
Rotation the spin of a body on its axis
Satellite a natural or artificial body that revolves around a celestial body that is greater in mass
Season 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
Solstice the point in which the sun is as far north or as far south of the equator as possible
Spring Tide a tide of increased range that occurs two times a month, at the new and full moon
Tidal Range the difference in levels of ocean water at high and low tide
Tide the periodic rise and fall of the water in oceans and other large bodies of water
Umbra a shadow that blocks sunlight, such as the conical section in the shadow of the Earth or the moon
Year the time required for the Earth to orbit once around the sun
Created by: Mrs_Gore
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