Final answer:
Tsunamis are shallow water waves caused by earthquakes.
Step-by-step explanation:
Tsunamis are shallow water waves caused by earthquakes. They are not caused by hurricanes or wind, nor are they restored by gravity or surface tension. When an earthquake occurs beneath the ocean floor, it can generate a series of powerful waves that travel across the ocean, causing a tsunami. These waves can travel great distances and can be devastating when they reach coastal areas.
Learn more about Tsunamis and their causes