Tsunami Flashcard

Front

What causes a tsunami?

Back

A tsunami is caused by a large and sudden displacement of the ocean, often due to underwater earthquakes, volcanic eruptions, or landslides.

Front

How do tsunamis spread from their source?

Back

Tsunamis spread outward in all directions from their source, affecting vast areas of the ocean.

Front

What can strong water currents from tsunamis do?

Back

Strong water currents from tsunamis can damage boats and harbors, posing significant risks to maritime activities.

Front

What is the main difference in movement between tsunami waves and wind waves?

Back

Tsunami waves move through the entire water column, while wind waves primarily impact the surface.

Front

Where are tsunamis most frequent?

Back

Tsunamis are most frequent near active plate boundaries, where tectonic activity is common.

Front

Define tsunami.

Back

A tsunami is a series of ocean waves caused by the displacement of a large volume of water, typically due to seismic activity.

Front

What is the typical speed of a tsunami in deep water?

Back

In deep water, tsunamis can travel at speeds of up to 500-800 km/h (310-500 mph).

Front

How does the depth of water affect tsunami wave height?

Back

In deep water, tsunami waves are often less than a meter high, but as they approach shallow coastal areas, their height can increase dramatically.

Front

What role do tectonic plates play in tsunami formation?

Back

Tectonic plates can shift and cause underwater earthquakes, which displace water and generate tsunamis.

Front

What is the difference between a tsunami and a tidal wave?

Back

A tsunami is caused by geological events, while a tidal wave is a misnomer often used to describe the regular rise and fall of sea levels due to gravitational forces.