Final answer:
A tsunami is caused by tectonic plates moving underwater and releasing energy, resulting in a large wave. Earthquakes, volcanic eruptions, and underwater landslides can cause tsunamis.
Step-by-step explanation:
A tsunami is caused by
tectonic plates moving underwater. When these plates shift and release energy, it creates a large wave that can travel across the ocean. The most common cause of tsunamis is
earthquakes, where tectonic plates are forcefully thrust or strained, resulting in a sudden displacement of water. Occasionally, volcanic eruptions or underwater landslides can also generate tsunamis.
Learn more about Causes of tsunamis