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The Moon

The Moon. Earth’s Buddy. What is a Moon?. A Moon is a natural satellite that revolves around a planet. How does the Moon move?. Earth’s moon revolves and rotates at the same speed, this is why we only see one side of the moon from Earth. The Moon’s Orbit. The moon’s orbit is an ellipse.

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The Moon

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  1. The Moon Earth’s Buddy

  2. What is a Moon? • A Moon is a natural satellite that revolves around a planet.

  3. How does the Moon move? • Earth’s moon revolves and rotates at the same speed, this is why we only see one side of the moon from Earth.

  4. The Moon’s Orbit • The moon’s orbit is an ellipse. • Perigee- moon is closest to earth • Apogee- moon is farthest from earth

  5. Why does the Moon Change Shape? • Phases: How much of the lighted side of the moon you can see. • Lasts about 29.5 days

  6. Starts with a New Moon (No moon)

  7. Waxing Crescent • Waxing= growing • Crescent= less then half of the lighted side is visible

  8. First Quarter • You can see half of the lighted side

  9. Waxing Gibbous • Gibbous= You can see more then half of the lighted side of the moon

  10. Full Moon You can see the entire lighted side

  11. Waning Gibbous • Waning- lighted side of the moon is shrinking

  12. Last Quarter

  13. Waning Crescent

  14. What causes tides? • Gravity from the moon pulls on the Earth. • Tides occur mainly because of differences in how much the moon pulls on different parts of the Earth

  15. What are the different parts of a Shadow? • Umbra: Dark part (direct) of a shadow • Penumbra: Lighter (indirect) part of a shadow.

  16. Solar Eclipses • The moons shadow hits the Earth

  17. Lunar Eclipses • When the moon is in the Earth's shadow

  18. More about Eclipses! • Eclipses can only occur during a full moon. • Eclipses are rare because the moons orbit is tilted compared to Earth

  19. Next Eclipses • Next Solar Eclipses: May 20th, 2012 and November 13th, 2012 • Next Lunar Eclipse: June 4th, 2012

  20. The Earths Moon • Gravity is 1/6th that of Earth • Diameter is 3476km (that is 1/4th the size of earth, about the length of the United States) • 1/80th the density of Earth (that’s light)

  21. Features on the Moon • Craters: holes or pits created from meteors • Maria: Originally thought to be seas, but are actually low dry areas that were flooded by molten material. • Highlands: high areas of the moon

  22. How did we get our moon? • Collision Theory • An object about the size of Mars crashed into Earth. This broke off a piece of Earth and a piece of its self. The two pieces orbited around Earth and eventually connected and formed into a sphere.

  23. Going to the moon… • 1964-1972: US and Soviet Union sent a ton of Rockets to the moon • Discovered it was solid

  24. Apollo 11 • July 1969 • Neil Armstrong, Buzz Aldrin, and Micheal Collins traveled to the moon. • Armstrong and Buzz were the first two men to walk on the moon. • They brought back samples to study

  25. Credits • Created by Michelle Riccobene • All video from KLVX video streaming • All images are from Prentice Hall Science Explorer text book or Google Images ( www.google.com ) committee

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