The document describes the three main types of rocks: 1. Igneous rocks such as pumice that form from the cooling and solidification of magma or lava. 2. Sedimentary rocks such as sandstone that form from the compression of sediments like sand and shells. 3. Metamorphic rocks such as marble that form from the alteration of existing rocks by heat, pressure, and chemical compounds.

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2. •
3
1. Igneous Rocks
)
2.
Sedimentary Rocks)
3. Metamorphic

4. Igneous
Rocks )

7. Pumice )

8. http://deaw12.exteen.com/

9. http://www.47marble.com/index.ph

10. http://

11. http://203.172.130.100/nfe

14. Sedimentary
Rocks)

16. http://www.bloggang.com/da
ta/skit/picture/1217288740.jpg

17. http://images.thaiza.com/118/118_2

19. http://upload.momypedia.com/elctfl/blog

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21. http://www.thaiselling.com/tha

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28. http://shethough

29. treasure-hunting

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31. http://news.nationalgeographic.com/new

33. Metamorphic
Rocks)

35. http://www.thaimtb.com/webb
oard/172/86475-18.jpg

36. http://www.chokenumsin.co.th/
pic_detail/shine6_13.jpg

37. il.mahid
ol.ac.th

38. http://www.blogga

39. buildaroo

40. decorrep
ort.com

42. http://cherokee.exteen.com/images/postcards
/BryceCanyon/Resize%20of%20File0707.jpg

43. http://pix.com.ua/db/nature/trees_lea

44. http://www.vcharka

45. http://www3.srp.ac.th/moodl
edata/3/hot41202ok/phae3.j

46. http://www.manongmanang.c

47. http://www.moohin.com/about-

48. http://travel.kapook.com/

49. http://www.thaitourzone.com/ea

50. arunsa
wat.co

51. http://trave

52. http://backpacker2007.multiply.com/photos/albu

53. 3
1.

54. http://encycl.opentopia.com
/term/Weathering

55. lilt.ilstu.edu

56. http://www.oknation.net/blog/1
98448/2009/09/02/entry-1

57. answersincreat
ion.org

58. fisho.com

60. answersincreat
ion.org

61. 2.
tafoni.com clccharter.or

62. 3.
travel.thai

63. dmr.go.th

64. paipibut.org