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14 Cards in this Set
- Front
- Back
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Season
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are opposite in northern and southern hemispheres
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Summer Solstice
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Occurs on June 21 or June 22
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Winter Solstice
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occurs on December 21 or December 22
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Spring Equinox
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occurs when Sun's vertical rays strike directly on the Equator
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Vernal Equinox
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is a synonym for Spring Equinox
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Autumnal Equinox
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is a synonym for Fall Equinox
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Tilt
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this produces a change in day length over the course of a year
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Axis
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an imaginary line Earth rotates on
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Solar Angle
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the angle in which sun strikes Earth's surface
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Equinox
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means equal day and night
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Revolution
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this takes one year to complete
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Rotation
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this takes one day to complete and why we experience day and night
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Solar Radiation
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energy travels from the sun to 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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