Tsunamis Flashcards

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1
Q

what are tsunamis?

A

giant sea waves generated by shallow focus underwater earthquakes involving movements of the sea bed

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2
Q

what do tsunamis have?

A

a very long wavelength and a low wave height they are in the open ocean and travel at speeds of 700km per hour

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3
Q

how are tsunamis formed?

A
  1. rapid movement of ocean floor displaces a column of water
  2. a series of waves travel outwards at heights believed to be less than 3 feet
  3. as a wave approaches land, it’s energy compresses into a smaller space forcing it to gain height
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