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Flashcards in Tsunamis Deck (5)
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0

What causes tsunamis?

earthquake beneath the sea floor :
- plates grind together and move the bed up and down
- hundreds of cubic metres of water can be displaced
- water slows down in shallower water and piles up = wave

1

How frequently do large ones occur?

rare: about 25 in the past century

2

Where has the highest amount of tsunamis?

60% of all known tsunamis are in American Samoa and Tonga and Samoa

3

Can earthquakes be predicted?

No

4

Can tsunamis be predicted?

Earthquakes can't be predicted however, geologists can determine within minutes after an earthquake whether a tsunami is likely.
People need to recognise signs of earthquakes and reach high ground