The moon of the EARTH What are the phases of the moon? What affect does it have on the earth?
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Transcript of The moon of the EARTH What are the phases of the moon? What affect does it have on the earth?
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The moon of the EARTH
What are the phases of the moon?
What affect does it have on the earth?
![Page 2: The moon of the EARTH What are the phases of the moon? What affect does it have on the earth?](https://reader036.fdocuments.in/reader036/viewer/2022062713/56649f455503460f94c66132/html5/thumbnails/2.jpg)
Important terms in Astronomy…
Rotation- • To spin around an axis
• Rotate• Like a ballerina or a
merry-go-round
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Important Terms in Astronomy…
Revolution- • To go around an object in a curved path
• Revolve
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![Page 5: The moon of the EARTH What are the phases of the moon? What affect does it have on the earth?](https://reader036.fdocuments.in/reader036/viewer/2022062713/56649f455503460f94c66132/html5/thumbnails/5.jpg)
Important Terms in Astronomy…
Orbit- • The path a body (such as a planet) takes in its revolution around another body (like the Sun).
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How far away is the MOON?
• 380,000 km (about 239,000 miles)
• Moving away slightly each year (3.8 cm) less than 2 inches
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What is a SATELLITE?
• A natural or man made object that revolves around a planet
• A natural satellite is a MOON
• Earth’s moon is also called LUNA
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What is the moon doing out in space?
• Revolving around the Earth in a counterclockwise direction
• Rotating on its axis as it goes around the Earth
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27 days to go through a complete cycle
• We always see the same side of the moon because…
• 27 days to complete 1 rotation on its axis
• 27 days to complete 1 revolution around the earth
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Comprehension Check:
• 1. What does it mean when the earth REVOLVES around the sun?
• 2. What does it mean when the moon is ROTATING?
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Where did the Moon
come from?
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Giant Impact Theory
• Earth struck by large body, size of Mars.
• Part of body + Earth flung into space.
• Captured by gravity of Earth.