The Moon Facts about the moon… 1/6 th of Earth’s gravity -12.5 magnitude Light from moon is...
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Transcript of The Moon Facts about the moon… 1/6 th of Earth’s gravity -12.5 magnitude Light from moon is...
![Page 1: The Moon Facts about the moon… 1/6 th of Earth’s gravity -12.5 magnitude Light from moon is reflected light from the sun. 11%. The rest is absorbed.](https://reader035.fdocuments.us/reader035/viewer/2022062321/56649f1c5503460f94c31ddb/html5/thumbnails/1.jpg)
The Moon
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Facts about the moon…• 1/6th of Earth’s
gravity• -12.5 magnitude • Light from moon is
reflected light from the sun. 11%. The rest is absorbed.
![Page 3: The Moon Facts about the moon… 1/6 th of Earth’s gravity -12.5 magnitude Light from moon is reflected light from the sun. 11%. The rest is absorbed.](https://reader035.fdocuments.us/reader035/viewer/2022062321/56649f1c5503460f94c31ddb/html5/thumbnails/3.jpg)
Facts about the moon…• No atmosphere
• No air
• No water
• Extreme temperatures -280 to 250!
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Facts about the moon…
• Long days 14 Earth days/Earth nights
• Smaller than the Earth
• No sound
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How did the Moon form?• Impact-ejection hypothesis…or…The
Big Whack!• 1) Earth was hit by a large object (Mars
size)• 2) Debris from the impact went out to
space (super-hot vapor)• 3) Debris eventually formed moon over
time due to gravity. (30,000 years)
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Facts about the moon…
•240,000 miles from the Earth
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Moon Rotation• The Moon has a
synchronous rotation with the Earth = we always see the same side of the moon.
• 27.3 day rotation
![Page 8: The Moon Facts about the moon… 1/6 th of Earth’s gravity -12.5 magnitude Light from moon is reflected light from the sun. 11%. The rest is absorbed.](https://reader035.fdocuments.us/reader035/viewer/2022062321/56649f1c5503460f94c31ddb/html5/thumbnails/8.jpg)
History of the Moon• Used for hunting/farming
• Tides
• Calendar “month” comes from moon.
• Galileo identified light and dark areas…
• Lots of folklore/mythology
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Features of the Moon• Mare/maria (sea)• Dark areas of the moon-
thought they were oceans• Dry lava beds
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![Page 11: The Moon Facts about the moon… 1/6 th of Earth’s gravity -12.5 magnitude Light from moon is reflected light from the sun. 11%. The rest is absorbed.](https://reader035.fdocuments.us/reader035/viewer/2022062321/56649f1c5503460f94c31ddb/html5/thumbnails/11.jpg)
Features of the Moon
• Highlands-Light areas of the moon. Ancient lunar crust.
• Named for famous mountain ranges on Earth (Alps)
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![Page 13: The Moon Facts about the moon… 1/6 th of Earth’s gravity -12.5 magnitude Light from moon is reflected light from the sun. 11%. The rest is absorbed.](https://reader035.fdocuments.us/reader035/viewer/2022062321/56649f1c5503460f94c31ddb/html5/thumbnails/13.jpg)
Features of the Moon
Craters- from meteorite impacts. Named after famous scientists.
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Over time…• The moon was continually pelted
with meteorites leaving it cratered
• Last 3 billion years relatively quiet…
• Now the moon is essentially dead
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Space Exploration• 6 U.S. Apollo missions
from 1969-1972.• 837 lbs of moon rock.
“The Eagle has landed”- Sea of Tranquility
Moon quakes
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Neil Armstrong
• July 20, 1969.• Powdery soil- from shattering rock during bombardment.
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The footprints will always remain
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Lunar Spud
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Lunar Halo• Caused by ice crystals in the Earth’s
atmosphere that are refracted in the light.
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Moon Illusion
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Harvest Moon• Full moon near
the equinox.
• Rises earlier than normal to give extra light for farmers.
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Colored moon• Dust in the
atmosphere refracts and makes the moon appear colored.