Class X

3. The development of submarine warfare druing World War II created a pressing need to map the ocean floor. This actually led to research on the ocean floor that would help explain the movement of the continents. What tool was used to do this mapping
  1. underwater cameras
  2. sonar surveys
  3. studies of living things
  4. rock sampling
8. Plate tectonics is our current theory of how the movement of continental masses relates to the movement of ocean basins. This movement explains many phenomena, such as
  1. earthquakes
  2. earthquakes
  3. weather patterns
  4. all of the above
10. Volcanoes occur in similar locations to earthquakes, and are common along plate boundaries. Sixty percent of volcanoes occur surrounding the Pacific Ocean, a location called
  1. "the hot zone"
  2. "the Ring of Fire"
  3. "the Volcano Zone"
  4. ,
8. Plate tectonics is our current theory of how the movement of continental masses relates to the movement of ocean basins. This movement explains many phenomena, such as
  1. earthquakes
  2. earthquakes
  3. weather patterns
  4. all of the above
3.Scientists found that the continents were moving apart from each other due to magma rising out of mid-ocean ridges, and they called this
  1. sea floor spreading
  2. sea floor rising
  3. changing sea floor
  4. underwater volcanos
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