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Exam 4: Tsunamis

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Question 21

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85% of tsunamis occur in the Pacific Ocean.

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Question 22

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Discuss the primary and secondary effects of the 2011 tsunami in Japan,and describe the estimated recovery times for both these effects.

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The large tsunami triggered by the Tohok...

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Question 23

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Which of the following is a primary effect of tsunamis?

Tsunamis travel fastest in shallow water.

The most common cause of tsunamis is/are

The largest known run-up occurred in a local tsunami in Lituya Bay,Alaska.

The ________ was the most deadly tsunami disaster in history,responsible for over 230,000 deaths.

The 2011 Tohoku earthquake (9.0 mag)responsible for the Japanese Tsunami was the result of upward movement on a giant thrust fault marking the surface of the Pacific Plate.

Deaths for the Indian Ocean tsunami of 2004 exceeded a quarter of a million people.

The study of ancient tsunami deposits using radiocarbon dating is an important tool in understanding the frequency of tsunamis in areas where they are rare but powerful.

Which of the following has a low risk of tsunamis?

How much vertical and horizontal motion occurred on the fault which ruptured and caused the 2004 Indonesian earthquake and tsunami?

Though the Pacific Early Warning System detected the earthquake that caused the 2004 Indian Ocean tsunami,why was a warning not issued?

Which of the following statements is TRUE?

There were no secondary effects during the 2011 Japanese tsunami.

Even tsunamis only one or two metres high have the power to destroy small buildings.

Given that coastal mangrove can limit tsunami damage,why has it commonly been removed in many tropical locations such as Thailand?

The speed of a tsunami increases as it nears land.

To save lives,why is a high-tech tsunami warning system alone not adequate?

The Indian Ocean tsunami in 2004 originated off the northeast coast of Africa.