Tsunami Review 1

How fast can a tsunami move in the open ocean waters?

• over 500 miles per hour

• Around 50 miles per hour

• over 5,000 miles per hour

• under 5 miles per hour

5. Where do most of the Tsunamis in the world occur?

a. Gulf of Mexico

b. Atlantic Ocean

c. Pacific Ocean

d. Arctic Ocean

• a

• b

• c

• d

8. During the 2011 Tōhoku earthquake and tsunami in Japan, what natural event was primarily responsible for causing the tsunami?

a. The earthquake itself

b. A volcanic eruption triggered by the earthquake

c. A landslide triggered by the earthquake

d. A glacier breaking off into the ocean due to the earthquake

e. A hurricane occurring simultaneously with the earthquake

• a

• b

• c

• d

• e

Do all undersea earthquakes trigger a tsunami?

• YES

• NO

Is it possible for a tsunami to pass under your boat and you not know it is happening?

• yes

• no

What natural events can trigger a tsunami?

• earthquakes

• underwater volcanic eruptions

• landslides

• all of the above

As the waves travel from the deep sea towards the shallow beach, they get

• bigger

• smaller

• stay the same

All of the following are factors that affect tsunami intensity except

• Magnitude of earthquake causing tsunami

• Distance from earthquake to land

• Shape of coast line

• Time of day when earthquake occurs

How does the image of a buoy relate to tsunamis? (may be more than one)

• It measures the wave height

• It is part of the tsunami warning system

• It is a seismograph

• It is a life raft

In North America, what area is most vulnerable to tsunamis?

• The east coast beaches

• Florida's coastal towns

• California coastline

• Alaskan coastline