1. Earth / Moon / Sun Earth’s Moon
Chapter 29
Earth / Moon / Sun Earth’s Moon

2. Main Idea
Tides, Moon phases, and eclipses result from interactions between the Moon, Earth, and the Sun.

3. Moon Revolution & Rotation

4. Moon Revolution and Rotation
Revolves around the Earth
Rotates on its axis
We only see one side… why?

5. How Long Does it Take?
It takes 27.3 Days for Moon to revolve around Earth.
It takes 29.5 days for the Earth/Moon/Sun to line up.
Month is derived from the same Latin word as Moon. Why?

6. So…
How does the moon rotate and revolve?

7. How Does the Moon Affect Earth?

8. What is a tide?

9. Tide Rise or fall in the ocean surface. How are they caused?

10. Example: Holy Island, England

11. Roads are blocked twice a day with high tide

12. Causes of Tides
Gravitational attraction between the Moon, Sun, and large bodies of water on the Earth.

13. High Tide
The closer the moon to Earth, the stronger the pull and the higher the tide.

14. So…
What are tides?

15. Moon Phase and Moonlight

16. Question
Why does the moon change shape?

17. Moon Phase The change in appearance of the Moon as seen from Earth.
Positions of the Sun, Moon, and Earth determine it.

18. What is Moonlight? The sun reflecting off the moon.
The moon has no natural light.

19. Moon Phases

20. New Moon
Moon is between Earth & Sun
Not visible on Earth

21. Waxing Phases Waxing means it appears to get bigger
Starts after the New Moon

22. Waxing Cresent

23. First Quarter
Called a “Half Moon”

24. Waxing Gibbous
Gibbous means “bulging”

25. Full Moon
Earth Between Moon and Sun
Fully lit by Sun

26. Waning Phases
Waning means to get smaller

27. Waning Gibbous

28. Third Quarter Moon

29. Waning Cresent

30. Moon Phases Video

32. So
What are the major moon phases?
What is waxing and waning?

33. Harvest Moon
The full moon closest to the fall equinox

34. September 27/28, 2015

35. Harvest Moon Rises early in the evening, stays up all night
Orange/Red in color
Farmers could work later in the evening when the Harvest Moon was up, hence the name.

36. Super Moon! http://cnn.it/1PtZO45
Why aren’t eclipses, stars, and other lunar/celestial events seen everywhere?
Article/Project?

37. Take out your moon phase handout
Take out a clean sheet of paper and a pen.

38. Eclipses

39. Eclipse
Occurs when the Earth, Moon or other object blocks sunlight

40. Solar Eclipse
Moon is between the sun and Earth, causing a shadow on Earth.
Sun is blocked

41. Solar Eclipse

42. Lunar Eclipse Earth is between sun and Moon
Earth causes a shadow on the moon
Moon is blocked

43. Lunar Ecliplse

44. Solar and Lunar Eclipse

45. The Moon’s Surface

46. Why do you think the moon’s surface looks like it does?

47. Craters
Caused by impact of asteroids and comets

48. Highlands & Maria Highlands : areas thrust upward from impact
Maria: . Cracks from impact filled with molten lava, called maria

49. Regolith Layer of dusty lunar material from impacts
Up to 40 meters thick!

50. A Tour of the Moon

51. Moon’s Interior
Crust
Upper mantle
Lower Mantle
Core

52. Giant Impact Theory
Moon created with debris from the impact that created the Earth.