9. $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 Exploration Seafloor Features 2 Seafloor Features 1 Zones / Sediments General 1General 2

10. na

12. What orbits the Earth and takes measurements of the ocean from space?

13. satellites

15. This device is used on the bottom of ships to map seafloor features using sound echoes.

16. sonar

17. This was the name of the first ocean exploration vessel.

18. Challenger

19. The name of the first satellite designated to study the oceans.

20. SeaSat A

21. na

23. Several sea floor features that are technically part of the continents are collectively called these.

24. Continental margins

25. The shallowest part of the ocean.

26. Continental shelf

28. Underwater volcanoes.

29. Seamounts

30. Very deep and flat parts of the ocean.

31. Abyssal plains

32. na

34. Underwater mountain chains that extend down the middle of some of the oceans.

35. Mid-ocean ridges

36. Steep drop off from the continental shelf to the sea floor.

37. Continental slope

39. Ocean basins make up what % of the Earth’s surface?

40. 60%

41. Flat topped seamounts.

42. guyots

43. na

45. Most ocean sediments come from here.

46. continents

47. Oozes are the slow accumulation of what on the sea floor.

48. shells

49. What ocean zone covers the ocean basins?

50. Open-ocean

51. These sediments accumulate the slowest and are made up of metals.

52. Manganese nodules

53. na

55. Self contained underwater breathing apparatus is this.

56. scuba

57. The deepest point in the ocean is named this.

58. Marianna trench

59. The deepest part of the oceans.

60. trenches

61. Holes on the seafloor through which magma heated water erupts.

62. Hydrothermal vents

63. na

65. The ocean zone found between areas of high tide and low tide.

66. intertidal

67. The gently sloping deposits of sediment leading up to the continental slope.

68. Continental rise

70. The name of the vessel that first used sonar to map the sea floor.

71. Meteor

72. The ocean zone that extends from areas of low tide to the edge of the continental shelf.

73. neritic

74. Topic: Satellites

75. Name one recent satellite that was used to map sea level variations and thus sea floor features.

76. Topex/Poseiden Jason 1 or 2