PES Skill Sheets.book - Capital High School

13. S Sh—Sand and shells on the bottom, Co Sh—coral shells on
bottom, h S—hard sand on bottom, Co S—coral sand on
bottom, bk SH—broken shells on bottom, bk Co—broken
coral on bottom, Sh Co—shells and coral on bottom
14. It is a flashing lighthouse. The light is obscured for longer
than it is showing (the opposite is true with an occulting
light).
15. No student response required.
16. Explosive Dumping Area
17. A bad idea!
18. No. Lower the anchor and use the rowboat to get ashore.
19. Four
20. The fourth is aeronautical, which means that it displays
flashes, in this case, of white and green, to indicate the
location of an airport, a heliport, a landmark, a certain point
of a federal airway in mountainous terrain, or an obstruction.
21. Seven nautical miles
22. Cables
23. Drop anchor
24. No
25. It means that the rocks on the isle are covered and uncovered
by water and that they reach a height of 269 feet.
26. Fathoms
27. No student response required.
28. 1:100,000
29. You can see more detail on the second map.
30. National Response Center or the nearest US Coast Guard
facility
Skill Sheet 3.2: Topographic Maps
1. Answer graphic: 2. Answer graphic (at
right):
3. Answers are:
a. 0 or sea level
b. 400-499 feet
c. 100 feet
d. 300 feet
e. between 0 and
100 feet.
4. Answers are:
a. The island
becomes two
islands.
Skill Sheet 3.3: Bathymetric Maps
1. Example answers:
a. Mid-Atlantic Ridge
b. East Pacific Rise
c. Middle America Trench or Mariana Trench
d. Falkland Plateau
e. Mendocino Fracture Zone
2. Two tectonic plates move apart.
3. Answers are:
a. East Pacific Rise
b. Chile Rise; this rise looks like the Mid-Atlantic Ridge
c. Chatham Rise; this feature seems to be a plateau on the sea
floor
4. Subduction
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31. WXM-96; 162.475 Hz
32. 2.5 fathoms
33. Going right up to the shore gives you three feet of water
below the ship—that’s not very much. It is recommended to
anchor further out and row or perhaps swim to shore.
34. 46 feet
35. Coral shells
36. A cay is a small, low island or reef made mostly of sand or
coral.
37. Cables
38. feet
39. 1:15,000
40. More detail is evident in this map than the other two.
41. The lines represent areas that have been swept clear, called
wire-dragged areas. The depth is noted on the map to 42 feet
offshore of the solid line and to 36 feet between the solid and
dashed lines.
42. We know that our boat is clear in this area because our boat is
12 feet deep.
43. Yes
44. Row in—it is a very shallow channel with many areas even
less than five feet deep.
45. No student response required.
46. Yes
47. No student response required.
48. No student response required.
49. Answers will vary.
50. No student response required.
b. The original island is now three islands.
c. No, the storm wave would wash over the island.
5. A combination of two diverging plates at the East Pacific Rise
and subduction zones in the northern part of the North Pacific
Ocean. The plate movement associated with these features
may have caused the fracture zone.
6. The ridge has a lot of faults. There is a thin, dark-blue line in
the middle of the ridge. The white areas around the ridge are
not very prominent.
7. This rise is less jagged. The white area near the rise is more
prominent here than at the Mid-Atlantic Ridge.
8. Mid-Atlantic Ridge; the dark line indicates a valley in the
middle of the ridge
9. Cross-sections of the Mid-Atlantic Ridge and the East Pacific
Rise (Based on viewing the bathymetric map):