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5 Written questions

5 Matching questions

  1. El Nino
  2. undertow
  3. wave period
  4. wavelength
  5. ocean
  1. a a subsurface current that is near shore and that pulls objects out to sea
  2. b the time between the passage of two wave crests or troughs at a fixed point
  3. c The distance from any point on a wave to an identical point on the next wave
  4. d a large body of water constituting a principal part of the hydrosphere
  5. e a change in the surface water temperature in the Pacific Ocean that produces a warm current

5 Multiple choice questions

  1. long narrow valley where tectonic plates separate on the ocean floor
  2. large, flat level area of deep ocean basin
  3. a surface current that carries warm water fromt he tropics to the North Atlantic
  4. long undersea mountain chain where ocean floor spreading occurs
  5. the curving of the path of a moving object from an otherwise straight path due to Earth's rotation

5 True/False questions

  1. tsunamiSound navigating and ranging


  2. upwellingone of a group of long ocean waves that have steadily traveled a great distance from their point of generation


  3. ocean trenchdeep, steep depression on the ocean floor where tectonic plates converge


  4. desalinationthe measure of the amout of dissolved salts in a liquid


  5. surface currenta horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean's surface


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