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Q: Tsunami is caused by_______
  • A. underwater volcanic activity
  • B. lower atmospheric pressure
  • C. rocks underground suddenly breaking
  • D. strong winds driving water onshore
Correct Answer: Option A - A tsunami is a series of extremely long waves caused by underwater volcanic activity, large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor. The force creates waves that radiate outward in all directions away from their sources, sometimes crossing the entire ocean basins.
A. A tsunami is a series of extremely long waves caused by underwater volcanic activity, large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor. The force creates waves that radiate outward in all directions away from their sources, sometimes crossing the entire ocean basins.

Explanations:

A tsunami is a series of extremely long waves caused by underwater volcanic activity, large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor. The force creates waves that radiate outward in all directions away from their sources, sometimes crossing the entire ocean basins.