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19 Cards in this Set
- Front
- Back
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summer solstice occurs on this date
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June 21 or 22
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the longest day of the year is called this
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summer solstice
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dates of winter solstice
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December 21 or 22
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the shortest day of the year is called this
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winter solstice
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dates of spring equinox
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March 21 or 22
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definition of equinox
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equal day and night
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synonym for spring equinox
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vernal equinox
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synonym for fall equinox
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autumnal equinox
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axis
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the imaginary line that passes through the North and South Poles
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revolution
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one turn of the earth around the sun
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tilt of the earth
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23.5 degrees
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the Earth's axis always points towards this
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the North Star or Polaris
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this takes the earth 365 days to complete
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one revolution around the Sun
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this takes the Earth 24 hours to complete
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one rotation
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this causes day and night on Earth
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a rotation of the earth
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another name for the North Star
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Polaris
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solar angle
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the angle at which the sun strikes the Earth's surface
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solar radiation
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energy travels from the sun to the Earth as radiation in the form of rays
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heat
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added or external energy that causes a rise in temperature, expansion evaporation or other physical change
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