Tsunami Preteach

What is a tsunami?

• A forest fire

• A volcanic eruption

• A wave of destruction originating from the ocean

• A type of storm

What causes tsunamis?

• Seismic activity like earthquakes

• Heavy rainfall

• River floods

• Strong winds

How fast can tsunamis travel?

• 10 miles per hour

• More than 500 miles per hour

• 100 miles per hour

• 50 miles per hour

What was the magnitude of the earthquake that struck Valdivia, Chile in 1960?

• 7.5

• 8.0

• 9.5

• 6.0

How high can tsunami waves reach?

• Up to 5 meters

• Up to 25 meters

• Up to 10 meters

• Up to 18 meters

What is the minimum earthquake magnitude that can potentially cause a tsunami?

• 7.0

• 6.0

• 5.5

• 4.5

What is the Japanese word for 'harbor wave'?

• Haru

• Nami

• Kami

• Tsunami

What percentage of tsunamis occur in the Pacific Ocean?

• About 25%

• About 90%

• About 75%

• About 50%

What year did the most powerful earthquake ever recorded occur?

• 1960

• 2004

• 2011

• 2018

What is the threshold magnitude for an earthquake to potentially cause a tsunami?

• 5.0

• 5.5

• 6.0

• 6.5