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vantuinen

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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term
definition
axis   an imaginary line about which a body rotates.  
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planet   a celestial body moving in an elliptical orbit around a star.  
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comet   a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.  
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season   each of the four divisions of the year (spring, summer, autumn, and winter) marked by particular weather patterns and daylight hours, resulting from the earth's changing position with regard to the sun.  
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tides   the alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and sun.  
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tilt   move or cause to move into a sloping position.  
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star   a fixed luminous point in the night sky that is a large, remote incandescent body like the sun.  
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gravity   he force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account.  
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rotation   the action of rotating around an axis or center.  
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lunar eclips   an eclipse in which the moon appears darkened as it passes into the earth's shadow.  
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