Tsunami and Earthquake Quiz

What does the term "tsunami" mean in Japanese?

• Harbor waves

• Earthquake waves

• Tidal waves

• Destructive waves

What is the minimum magnitude on the Richter scale required for an underwater earthquake to generate a tsunami?

• 5.0

• 6.0

• 6.75

• 7.5

Which of the following is NOT a cause of tsunamis?

• Underwater earthquakes

• Wind-generated waves

• Underwater volcanic eruptions

• Landslides

Why are tsunamis often mistaken for tidal waves?

• Both are caused by underwater earthquakes

• Both occur due to the moon's gravity

• Both involve large water movements

• They have similar wave patterns

Which ocean experiences the most tsunamis?

• Atlantic Ocean

• Pacific Ocean

• Indian Ocean

• Arctic Ocean

What geological phenomenon commonly causes tsunamis in the Pacific Ocean?

• Erosion of coastlines

• Subduction of tectonic plates

• Expansion of oceanic crust

• Formation of coral reefs

What happens to a tsunami's wave height and speed as it reaches shallower coastal areas?

• Wave height decreases, speed increases

• Wave height increases, speed decreases

• Both wave height and speed increase

• Both wave height and speed decrease

What is the term for the large volume of water pushed onto the shore by a tsunami?

• Wave crest

• Wave trough

• Run-up

• Wavelength

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

• 50 miles per hour

• 100 miles per hour

• 300 miles per hour

• Over 500 miles per hour

What is the main reason tsunamis can cause widespread destruction?

• They occur frequently during the day

• They have extremely long wavelengths

• They involve massive water displacement

• They are caused by tidal waves