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Details Title: Earth, Moon and Sun Description: Chapter1 Total Flash Cards: 25 Created: 08/24/2007 11:20:12	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term astronomy Definition the study of the moon, stars and other objects in space Term autumnal equinox Definition the day of the year that marks the beginning of fall in the N.Hemisphere Term axis Definition an imaginary line that passes through Earth's center and the north and south poles about which earth rotates. Term crater Definition a round pit on the moon's surface Term eclipse Definition the partial or total blocking of one object by another Term equinox Definition the two days of the year on which neither hemisphere is titled toward or away from the sun Term geosynchronous orbit Definition the orbit of a satellite that revolves around Earth at the same rate that Earth rotates Term gravity Definition the attractive force between two object; its depends on their masses and the distance between them Term latitude Definition a measurement of distance from the equator expressed in degrees north or south Term lunar eclipse Definition the blocking of the sunlight to the moon that occurs when earth is directly between the sun and moon Term maria Definition dark flat region on the surface Term neap tide Definition a tide with the least difference between low and high tides Term orbit Definition the path of the object as it revolves around another object in space Term penumbra Definition the part of a shadow surrounding the darkness part Term phase Definition one of the difference shapes of the moon as seen from earth Term revolution Definition the movement of an object around another object Term rotation Definition the spinning motion of a planet about its axis Term satellite Definition any object that revolves around another object in space Term solar eclipes Definition the blocking of sunlight to earth that occurs when the moon is between t he sun and the earth Term solstice Definition the two days of the year on which the noon sun is directly overhead at either 23.5 south or 23.5 north Term spring tide Definition a tide with the greatest difference between the low and high tides Term telescope Definition a device built to study distant object by making them appear closer Term tide Definition the rise and fall of the level of water in the ocean Term umbra Definition the darkest part of a shadow Term vernal equinox Definition the day of the year that marks the beginning of spring in the N. Hemisphere