Rotation, Revolution, Seasons
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20 terms
Terms | Definitions |
|---|---|
 Rotation | circular movement around an axis |
| Rotation creates | day and night |
| Revolution creates | the year |
| Revolution | the Earth has one _____ around the Sun- it takes 365 1/4 days |
| Summer solstice | sun is highest in the sky, and length of day is the greatest |
| Winter Solstice | sun is lowest in the sky, and the day is shortest |
| Vernal Equinox | March 20 or 21, when the number of hours of daylight and darkness are the same |
| Autumnal Equinox | First day of fall, when the number of hours of daylight and darkness are the same |
| Axis | an imaginary line through the center of the Earth |
| summer | Northern hemisphere has this when the North Pole is tilted toward the sun |
| winter | Northern hemisphere has this when the North Pole is tilted away from the sun |
| As the rotation speed increases | the length of day decreases |
| As the revolution speed decreases | the length of the year would increase |
| Waxing | the period during which the visible surface of the moon increases |
| Waning | the period during which the visible surface of the moon decreases |
| GIbbous | more than half, but less than fully illuminated |
| Crescent | phase where we see less than 1/4 of the lighted portion the Moon |
| Full Moon | Moon phase when all of the Moon's lighted half is visible |
| New Moon | moon phase when it is between Earth and the Sun and you cannot see the sunlit half |
| Quarter Moon | first and third quarter moon phases, which occur when the moon is in quadrature about one week after the new moon and full moon phases, repectively. the third quarter moon phase is also known as the last quarter moon phase |
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