Exam2Key - This is exam 2 Correct answers are in bold 1 Tsunamis can be caused by a transform faulting that horizontally offsets the ocean floor b

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This is exam 2. Correct answers are in bold. 1. Tsunamis can be caused by a. transform faulting that horizontally offsets the ocean floor. b. undersea landslides. c. thrust faulting that vertically offsets the ocean floor. a. the gravitational attraction of the sun and moon. e. only b and c above. 2. The amplitudes of tsunami waves a. increase as the waves travels from shallow to deep water. b. increase as the waves travels from deep to shallow water. c. are not affected by water depth. d. depend on the local wind velocity. e. only the chicken knows 3. Current warning systems for tsunami waves a. are not useful for areas within a few hundred km of the source of the waves. b. rely on Seismic stations and sensors on oceanic buoys. c. are only useful if it is actually possible to alert the people in the danger area. d. all the above (a-c) e. none of the above 4. The first tsunami wave that arrives to shore a. may not be the largest. b. will always arrive as a ‘peak’ (water coming in to shore first). c. will always arrive as a ‘trough’ (water receding from shore first). d. both a and b above e. both a and c above 5. How are tsunamis different from normal water waves? Tsunami waves a. involve movement of the entire water layer, while wind only affects the top of the ocean. b. involve the movement of the top 200 meters of the water layer, while wind only affects the top 10 or 20 meters c. involve the movement of only the bottom of the water layer, except when they reach shore. d. primarily move up and down, while water waves move side to side. e. are the same as water waves. 6. Despite considerable concern, no tsunami was reported from a second, magnitude 8.6 Sumatra earthquake that occurred on March 28, 2005, just southeast of the larger December 2004 event? Why might this have been? a. No tsunami was created because the earthquake was too small. b. No tsunami was created because the ocean floor didn’t move. c. A tsunami was created but did not impact any populated land so it was not recorded.
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d. A tsunami was created but it only affected a small local area. e. An earthquake aftershock can not create a tsunami. 7. You are vacationing in a major beach resort in Hawaii and you suddenly notice the water recede. You are 10 miles (16 km) from the nearest hills. Your best course of action is to a. get in a car and start driving. b. go out on to the beach as it’s a good time to look at the creatures in the sand. c. run for the higher ground. d. find a surfboard – good breaking waves are coming so try to ride it out. e. go to the upper floors of your hotel. 8. Tsunami waves in the deep ocean travel at several hundred kilometers per hour and are dangerous to ships to ships far out to sea. a.
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This note was uploaded on 03/18/2008 for the course ISP 203B taught by Professor Mackey during the Fall '07 term at Michigan State University.

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Exam2Key - This is exam 2 Correct answers are in bold 1 Tsunamis can be caused by a transform faulting that horizontally offsets the ocean floor b

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