Tsunamis 101 | National Geographic

What is the most frequent cause of tsunamis?

• Volcanic eruptions

• Landslides

• Earthquakes

• Meteorite impacts

What happens to a tsunami wave as it moves from the deep ocean towards the shoreline?

• It speeds up and decreases in height.

• It slows down and increases in height.

• It breaks into smaller, less powerful waves.

• It completely disappears due to friction.

How do tsunami waves behave differently from ordinary ocean waves when they reach the coast?

• Tsunami waves crest and break like normal waves.

• Tsunami waves move as a solid wall of water without cresting.

• Tsunami waves are much smaller and less destructive.

• Tsunami waves only occur during calm weather.

What is the primary goal of tsunami warning centers around the world?

• To predict the exact number of casualties from a tsunami.

• To study ancient tsunami events.

• To alert coastal areas and allow residents to evacuate to higher ground.

• To prevent tsunamis from forming in the first place.