28.2 Presentation (CP)

819 views

Published on

Published in: Technology, Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
819
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
5
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

































  • 28.2 Presentation (CP)

    1. 1. The Moon SECTION 28.2
    2. 2. 1.) Why doesn’t the moon appear blue like the earth? 2.) Why doesn’t the moon have clouds like earth?
    3. 3. Landed on Moon Clip
    4. 4. Reaching for Moon
    5. 5. Reaching for Moon • most knowledge about moon comes from space explorations by space probes
    6. 6. Reaching for Moon • most knowledge about moon comes from space explorations by space probes • Neil Armstrong and Buzz Aldrin first men to step on moon
    7. 7. First Steps Clip
    8. 8. Lunar Properties
    9. 9. Lunar Properties • one of largest moons (compared to size of planet it orbits)
    10. 10. Lunar Properties • one of largest moons (compared to size of planet it orbits) • moon relatively further from earth than most moons are from planets they orbit
    11. 11. Lunar Properties • one of largest moons (compared to size of planet it orbits) • moon relatively further from earth than most moons are from planets they orbit • solid, rocky body
    12. 12. Lunar Properties • one of largest moons (compared to size of planet it orbits) • moon relatively further from earth than most moons are from planets they orbit • solid, rocky body • only large moon among inner planets
    13. 13. Lunar Surface
    14. 14. Lunar Surface • albedo - amount of sunlight moon’s surface reflects
    15. 15. Lunar Surface • albedo - amount of sunlight moon’s surface reflects • very small
    16. 16. Lunar Surface • albedo - amount of sunlight moon’s surface reflects • very small • temperatures as high as 127ºC
    17. 17. Lunar Surface • albedo - amount of sunlight moon’s surface reflects • very small • temperatures as high as 127ºC • temperatures as low as -173ºC
    18. 18. Surface Features • highlands - light in color, mountainous, and heavily covered w/ craters
    19. 19. Surface Features • maria - dark, smooth plains • have scattered craters and rilles • rilles - meandering, valley-like structures
    20. 20. Surface Features • impact craters - formed when objects from space crashed into lunar surface
    21. 21. Surface Features • ejecta - material blasted out during impacts • rays - long trails of ejecta
    22. 22. Surface Features
    23. 23. Surface Features • Q: Why does moon have craters, while earth has few?
    24. 24. Surface Features • Q: Why does moon have craters, while earth has few? • A: Erosion on earth has eliminated traces of all but younger craters; on moon, craters present until one impact covers another
    25. 25. History of Moon
    26. 26. History of Moon • age b/w 3.8 and 4.6 billion years old
    27. 27. History of Moon • age b/w 3.8 and 4.6 billion years old • have regolith b/c of being bombarded heavily by space objects
    28. 28. History of Moon • age b/w 3.8 and 4.6 billion years old • have regolith b/c of being bombarded heavily by space objects • regolith - layer of loose, ground-up rock
    29. 29. History of Moon • age b/w 3.8 and 4.6 billion years old • have regolith b/c of being bombarded heavily by space objects • regolith - layer of loose, ground-up rock • maria slightly younger than highlands
    30. 30. Moon’s Interior
    31. 31. Tectonics on Moon?
    32. 32. Tectonics on Moon? • Q: Is the moon tectonically active?
    33. 33. Tectonics on Moon? • Q: Is the moon tectonically active? • A: Has moonquakes, but theorize that NOT tectonically active b/c no volcanos and no significant magnetic field
    34. 34. Capture Theory
    35. 35. Capture Theory • as solar system forming, large object ventured too near to forming earth, became trapped by gravitational pull, and formed into moon
    36. 36. Capture Theory • as solar system forming, large object ventured too near to forming earth, became trapped by gravitational pull, and formed into moon • something needed to slow down object to be trapped
    37. 37. Capture Theory • as solar system forming, large object ventured too near to forming earth, became trapped by gravitational pull, and formed into moon • something needed to slow down object to be trapped • earth and moon composed of very similar materials
    38. 38. Simultaneous Formation
    39. 39. Simultaneous Formation • moon and earth formed at same time and in same general areas thus materials they are formed from are essentially the same
    40. 40. Simultaneous Formation • moon and earth formed at same time and in same general areas thus materials they are formed from are essentially the same • does NOT account for different amounts of iron on earth and moon
    41. 41. Impact Theory
    42. 42. Impact Theory • moon formed as result of gigantic collision w/ earth by mars sized object when solar system was forming • materials from earth’s outer layers ejected into space and merged together to form moon

    ×