What causes a tsunami?

An underwater earthquake or disturbance.

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  1. An underwater earthquake or disturbance ✔
  2. A strong daily wind pattern
  3. The Moon's gravity alone

Why: Tsunamis are caused by underwater disturbances such as earthquakes.

Huh, didn't know that: Tsunamis are caused by underwater disturbances such as earthquakes.

The dad joke
A tsunami is a big wave, but it never waves hello first.
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References

Answer: An underwater earthquake or disturbance. Tsunamis are caused by underwater disturbances such as earthquakes.

  1. Scouting America: Oceanography www.scouting.org/merit-badges/oceanography
    Point out the differences among the storm surge, tsunami, tidal wave, and tidal bore.
    Checked 2026-11-07.

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