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15 Cards in this Set
- Front
- Back
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Axis |
The The imaginary line extending from the North Pole to the South Pole going through the center of the earth which is the center of the earths rotation currently points toward the North Star |
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Tilt |
The slant of the earths axis which is 23.5 |
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Rotation |
The spinning of the earth on its axis that causes day and night to occur |
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Revolution |
Earth's year-long elliptical orbit around the sun |
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Seasons |
Weather changes due to varied amounts of sunlight-- both in intensity and number of daylight hours received-- caused by the tilt of earth during revolution |
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Equinox |
Either of two days of the year on which neither hemisphere is tilted towards or away from the sun; sunlight shines equally on the northern and Southern Hemispheres |
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Autumnal equinox |
The Equinox in autumn, on about September 22 in the northern hemisphere and March 20 in the Southern Hemisphere |
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Vernal equinox |
The Equinox in spring, on about March 20 in the northern hemisphere and September 22 in the Southern Hemisphere. |
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Solstice |
Either of the two days of the year on which the sun is as far north or south of the equator as possible; on these days, the area of sunlight is at maximum in one hemisphere and at a minimum in the other hemisphere |
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Summer solstice |
The solistice that marks the onset of summer, at the time of the longest day, about June 21 in the northern hemisphere and December 22 in the Southern Hemisphere. |
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Winter solistice |
The solistice that marks the onset of winter, at the time of the shortest day, about December 22 in the northern hemisphere and June 21 in the Southern Hemisphere |
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Lunar cycle |
Refers to the moon' s patterns of movement (in relation to the earth and sun) and how it appears to change. |
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Eclipse |
The partial or total blocking of one object in space by another |
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Solar eclipse |
The blocking of sunlight to the earths that occur when the moon is directly between the sun and earth |
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Lunar eclipse |
The blocking of sunlight to the moon that occurs when earth is directly between the sun and moon. |
