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Lesson overview:What are tsunamis and how do they form?

  • Tsunamis are large waves, usually caused by volcanic or earthquake activity under the ocean.
  • They occur due to an earthquake, volcano or landslide happening on the ocean floor, causing water to be displaced.
  • Tsunamis are large waves, usually caused by volcanic or earthquake activity under the ocean.
  • They occur due to an earthquake, volcano or landslide happening on the ocean floor, causing water to be displaced.

This lesson will look at tsunamis and how they are formed.