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Rotation The spinning of an object on its axis.
Axis An imaginary line that goes through the North Pole and the South Pole
Revolution The movement of one object around another object
Direct Sunlight When a hemisphere is receiving light rays from the sun STRAIGHT on.
Tilted Not straight up. Slightly slanted . Earth has seasons because its axis is tilted.
When a hemisphere is tilted towards the Sun, it experiences more sunlight hours resulting in what season? Summer
When a hemisphere is tilted away from the Sun, it experiences less daylight hours resuling in what season? Winter
The amount of Earth's surface that is covered in sunlight at one time Half
seasons The TILT of Earth's axis and REVOLUTION causes Seasons.
Indirect Sunlight. When a hemisphere is receiving light rays from the Sun at an ANGLE.
Southern Hemisphere The hemisphere south of the Equator.
Northern Hemisphere The hemisphere north of the Equator.
Spring / Fall When the length of day equals the length of night. Neither hemisphere is tilted towards the Sun. 12 hrs day and 12 hrs night
23.5 degrees The degree Earth is tilted at.
Equator The imaginary line that cuts the Earth into Northern and Southern Hemispheres
Summer Solstice (1st day of Summer) Longest day of the year and Shortest night of the year
Winter Soltice (1st day of Winter) Shortest day of the year and Longest night of the year
Fall Equinox (equal=12 hrs day and 12 hrs night) September 21st
Spring Equinox (equal=12hrs day and 12 hrs night) March 21st
Created by: vdelag2
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