What is a Tsunami?
3rd Grade ยท Earth Science ยท 30 min
Lesson Preview
Learning Objective
I can describe what a tsunami is and how it is formed.
- 1
A tsunami is a series of powerful ocean waves often caused by an earthquake, volcano, or landslide under the sea.
- 2
Tsunamis are also known as "harbor waves" because "tsunami" means harbor wave in Japanese.
- 3
Warning signs of a tsunami include the ocean suddenly pulling back from the shoreline, the ground shaking, and a loud roaring sound coming from the ocean.


