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Earth, Moon and the Sun

Earth, Moon and the Sun. Motions of the Earth. Moon Differences & Space Visits. Phases of the Moon. Eclipses. Tides. The moon would look like this to someone on earth:. ½ of Earth and moon are always in sunlight. Sunlight. Moon. SUN. SUN. Sunlight. Earth. Sunlight. Moon. Moon.

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Earth, Moon and the Sun

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  1. Earth, Moon and the Sun Motions of the Earth Moon Differences & Space Visits Phases of the Moon Eclipses Tides

  2. The moon would look like this to someone on earth: ½ of Earth and moon are always in sunlight Sunlight Moon SUN SUN Sunlight Earth Sunlight

  3. Moon Moon Moon Moon Moon Moon Moon Moon Because the moon revolves around Earth, it looks different each night What the moon looks like from earth: Sunlight Keep clicking here to fast forward time SUN Earth Sunlight Sunlight

  4. There are 2 ways we describe a moon phase:1) How full is it? 2) Is it growing or shrinking? If the moon is less than ½ full, it’s called a crescent moon. If the moon is more than ½ full, it’s called a gibbous moon. If you can see the right side of the moon, it’s waxing (getting bigger). If you can see the left side of the moon, it’s waning (getting smaller).

  5. Some names of moon phases Crescent: less than ½ full Gibbous: more than ½ fullWaxing: getting biggerWaning: getting smaller 3rd quarter Waningcrescent Waninggibbous New moon Full moon Waxingcrescent Waxinggibbous 1st quarter

  6. C B H A D E F G Can you put these moon phases in the correct order?

  7. N O Q M K P J L Can you put these moon phases in the correct order?

  8. That’s the endof this section.Click here to go home

  9. Our Earth has 2 types of motion: North Pole Earth spins on its axis(this is called rotation) Earth moves around the sun (this is called revolution)

  10. In the time it takes Earth to do 1 revolution around the sun, the moon has done about 12 revolutions around Earth. We have 12 moonths in 1 year. Earth orbits the sun. And the moon orbits Earth.

  11. It looks like the sun moves around Earth, causing day and night Keep clicking here to see another day

  12. North Pole Every 24 hours, Earth does 1 rotation 12 11 1 2 10 3 9 8 4 5 7 6 Spacebar: start & freeze Page Up: rewind

  13. Day and night is caused by Earth’s rotation It looks like the sun moves across the sky – but the Earth is spinning – the sun is still! Sunlight SUN 12 11 1 2 10 3 9 8 4 Sunlight 5 7 6 Spacebar: start & freeze Page Up: rewind Sunlight

  14. Day and night is caused by Earth’s rotation Sunlight Sunset SUN 12 11 1 Midnight 2 10 Noon 3 9 Sunlight 8 4 5 7 6 Sunrise Sunlight

  15. The difference between night and day

  16. The moon would look like this to someone on earth: ½ of the Earth and moon are always in sunlight That’s the endof this section.Click here to go home Sunlight Moon SUN SUN Sunlight Earth Sunlight

  17. Because the sun is 400 times larger than the moon… Moon Sun Click here to see a 6 minute video of a Total Solar Eclipse (in Turkey, 2006)

  18. Moon Sun … the moon looks the same size as the sun to everyone on Earth … and the moon is 400 times closer than the sun…

  19. The moon’s orbit is slanted compared to Earth’s orbit Earth Sun

  20. Moon Because the moon’s orbit is slanted compared to Earth’s orbit, the moon rarely passes exactly between Earth and the sun Moon Whew! That was close! Well actually, when the moon passes near the sun, you cannot see the moon because we are seeing the moon’s dark side. However, let’s continue to pretend you were able to see the moon during the day… Moon Sun Moon Be patient, my little house friend Moon Think they’ll cross? Moon Moon

  21. S E M When the moon blocks out the sun, we have a solar eclipse Yes – very cool Cool!

  22. When the moon blocks out the sun, we have a solar eclipse I’m a tree! I can see!

  23. Total solar eclipse

  24. Total solar eclipse

  25. In an annular solar eclipse – moon only blocks middle of sun because the moon is a little further away from Earth

  26. Transit of Venus – June 8, 2004 Planets between Earth and the sun (Mercury and Venus) can cause mini-eclipses, called transits. Venus S E V

  27. S E M Can you see Earth’s shadow block out stars? When the Earth blocks out the moon, we have a lunar eclipse Why does the moon look red instead of being completely blocked out? It’s because some light from the sun deflects off the Earth’s atmosphere and hits the moon.

  28. Partial lunar eclipse

  29. Mr. Ligon took this photo from his house during the Total Lunar Eclipse of February 20, 2008

  30. A zoom-in on the previous photo

  31. Can you move the moon to create a solar eclipse? A lunar eclipse? Moon Sun Earth

  32. The blue lines on this map show the paths of all the total solar eclipses from 1951 to 2000

  33. The blue lines on this map show the paths of all the total solar eclipses from 2001 to 2050 That’s the endof this section.Click here to go home http://sunearth.gsfc.nasa.gov/eclipse/SEmap/SEmapNA/SEmapNA.html

  34. Tide video links • Tides coming in/out 1 • Tides coming in/out 2 • Mystery of Tides

  35. The moon’s gravity pulls Earth’s water toward the moon Moon

  36. Because Earth rotates, the same spot on earth has 2 high tides and 2 low tides about every 24 hours 12 11 1 2 10 3 9 8 4 5 7 6 Moon Spacebar: freeze Page Up: rewind

  37. Make high tide Make low tide

  38. The French castle Mont Saint Michel is sometimes an island That’s the endof this section.Click here to go home

  39. High tide and low tide, at the same place

  40. 4 important differences between Earth and the moon • The moon is about as ¼ as wide as the earth • The moon is covered with craters • The moon has less gravity than the earth • The moon has no air (atmosphere) on it

  41. People first thought the dark, flat parts of the moon were oceans Some people named these dark regions maria – the Latin word for ocean. However, these regions are really dried out lava beds.

  42. Many craters can be seen easily from earth

  43. Moon craters were caused by objects in space that crashed into the moon

  44. Moon craters come in all sizes

  45. The moon’s gravity only 1/6 as strong as the earth’s gravity Even if you jumped as hard as you could, you would not float away from the moon. The moon has less gravity – notno gravity. To escape the moon, you must go about 5000 m.p.h. You would be able to lift 6 times as much weight on the moon You would only weigh 1/6 as much on the moon Thanks to my diet, I now weigh only30 lbs Thanks to my diet, I now weigh only 180 lbs 300lbs 50 lbs Earth Moon

  46. Remember that Galileo proved that all objects fall at the same speed if you ignore air resistance Earth

  47. Because the moon has no air,there is no air resistance On the earth, the air slows down the falling feather. The bowling ball is too heavy to be stopped by the air. On the moon, there is no air to slow down the falling feather. The feather falls as quickly as the bowling ball. Earth Moon

  48. This is even more fun than gym! Neil Armstrong was the first human to walk on the moon

  49. This photograph was taken during the first moon landing (1969) by astronaut Michael Collins – you can see the moon below and the earth in the distance

  50. 97, 98, 99, 100. Ready or not, here I come! The moon is a fun place to play hide-and-seek!

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