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Seasons Exam 3 Notes - The angle between the incoming rays...

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Seasons Science Content The Earth is tilted on its axis at 23.5 degrees and always points to the North Star The angle at which light from the Sun strikes the surface of the Earth is called the solar angle Beam spreading is the increase in an area covered by a beam of light as the solar angle decreases. Science Terms/Vocabulary Rotation-the Earth spins on an imaginary line called its axis. This motion is called rotation. 1 full rotation is 24 hours or 1 Earth Day. Summer Solstice-June 21 or 22. The North Pole leans directly at the sun. Long days and short nights for the Northern Hemisphere. Winter Solstice-Dec. 21, 22. North Pole leans away from the sun. Short days and long nights for the Northern Hemisphere. Spring (Vernal) and Fall (Autumnal) Equinoxes- March 21, Sept. 21. These occur when the sun’s rays strike directly on the Equator. Days and Nights are nearly equal. Solar Angle- Angle at which light passes through the atmosphere.
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Unformatted text preview: The angle between the incoming rays of light and the surface of the land. Factors that affect Seasons on Earth • The Earth is tilted at 23.5 degrees on its axis • The tilt always points to the North Star • The Earth revolves around the sun every 365 days • When the Northern Hemisphere tilts towards the sun, it is summer. When the Northern Hemisphere tilts away from the sun, it is winter. • The solar angle affect the amount of energy that is being received by different parts of the Earth. • The solar angle changes because of the tilt of the Earth and its revolution around the Sun. The more direct (greater) the angle the more energy the Earth receives. • Summer days are longer and more hours of sunshine transfer more energy to Earth. • The Earth makes a full rotation on its axis every 24 hours to create night and day....
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