Meaning: a tsunami is a huge wall of water that races across the surface of the ocean. As the wave approaches land it increases in size destroying everything in it path as it crashes onto coastal land. The tsunami is normally caused by an underwater earthquake, landslide or volcanic eruption.

Fast Facts:

  • tsunami means "harbour wave"

  • heights can reach up to 40m

  • when the volcano erupted on Krakatua (1883) it created a tsunami of more than 40m

  • out in the ocean people on ships and boat might not notice the wave pass