LectureQuiz8+answers

LectureQuiz8+answers - QMz#8 (8 questions) 45 seconds per...

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Unformatted text preview: QMz#8 (8 questions) 45 seconds per question 1. Which of the following statements about waves is closest to the truth? a) The upswash and backswash are of equal power, so there is no net transport of sediment b) Storm waves can carry a lot of sand up the beach, so beaches are built up during the winter months c) Longshore drift is caused by waves that meet the shore at an oblique angle d) Pebbly beaches are a result of fair weather conditions, because the waves are not strong enough to move the pebbles 2. Windblown sand is: a) Well-sorted, and made up of angular grains of many different minerals b) Well-sorted, with rounded and frosted grains, predominantly of quartz c) Poorly sorted, with angular grains of sand mixed with silt and clay d) Poorly sorted, but with well rounded grains 3. Which of the following statements is closest to the truth? a) Near the equator moist air descends and causes rainfall b) Around 50-60°N latitude, rising air is driven toward the west b the Coriolis effect c) At about 30° latitude N and S, dry air descends and is associated with desert climates d) The prevailing wind direction in low latitudes is from the west e) Descending air around the polar regions is cool and moist and causes extensive precipitation 4. Which of the following coastal features is not primarily a result of longshore drift? a) sandspit b) barrier island c) delta d) bay mouth bar e) tombolo True 5. A sand dune moves by erosion on the down-wind (lee) side of the dune and deposition of sand on the windward side. True 6. Marine terraces in Southern California are the result of sea-level fall since the last ice-age. True 7. The weakest tides (neap tides) occur when the sun, moon, and earth are all aligned. False 8. The energy reserves of a fossil fuel are always smaller than its energy resources. End of Quiz # 8 ...
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This note was uploaded on 09/20/2009 for the course GEOL 105 taught by Professor Platt,davis during the Spring '08 term at USC.

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LectureQuiz8+answers - QMz#8 (8 questions) 45 seconds per...

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