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5 Cards in this Set
- Front
- Back
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Beam |
Spreading the way a light beam covers a large area when it hits a surface at an angle. |
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Equinox |
A day of the year when the Sun's rays shine straight down on the equator. |
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Season |
A period of the year identified by changes in hours of daylight and weather. |
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Solar angle |
The angle at which light passes through the atmosphere; measured from earth's surface. |
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Solstice |
A day of the year when earth's North Pole is leaning either towards the sun or away from the sun |
