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Published byGordon Cobb Modified over 9 years ago
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Earth –Moon- Sun
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What does Eclipse mean? There are times when the earth, moon, and sun line up Eclipses- when an object passes in front of another object
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Eclipse Facts Occur at new moon or full moon phases Does NOT occur at every full or new moon because of the 5 degree difference in the tilt of the paths of the earth and the moon
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Parts of a shadow Objects cast shadows Parts of a shadow 1. umbra- area of total shadow 2. penumbra-area of partial shadow
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Lunar Eclipse When earth’s shadow prevents sunlight from reaching the moon Usually see a dusky red or copper color because Earth bends sunlight Last about 4 hours
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Solar Eclipse Moon blocks light from the sun New moon Lasts about 7 minutes for a total eclipse Very rare Next total solar eclipse will be 2008 in Greenland Next total solar eclipse in U.S. is in 2017 http://www.youtube.com/watch?v=1Gs02YQNckE
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Effects of the Moon Tides
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Pull of the Moon There is a gravitational pull of the moon and sun The moon has a stronger gravitational pull because it is closer to Earth Sun’s tide making effect is about ½ that of the moon
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Tides Water is affected the most by the pull of the moon The gravitational pull of the moon causes tides
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What is a tide?
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Tide- daily rise and fall of the oceans surface Time and height of tides affected by: position of the moon and the sun relative to Earth
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http://www.youtube.com/watch?v=aN2RM5wa1ek
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Tide facts High tide- tide at highest point Low tide- tide at lowest point 2 high tides and 2 low tides each day
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Spring Tide When high tides are higher than normal Sun, moon, and earth are in a straight line 2x a month due (new moon and full moon)
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Neap Tide -When high tides are lower than normal -sun, moon, and earth at right angles - 2x a month (first and last quarter)
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