Exam 8: Tsunami Versus Wind-Caused Waves

Earthquake-related tsunami are created by sub-sea fault movements with pronounced vertical offsets of the sea floor.Such movements occur most commonly along __________________.

The 2004 Indian Ocean tsunami was generated by a magnitude 9.2 earthquake along __________ off the shore of Sumatra.

There is little threat of a tsunami striking the east coast of the United States.

Tsunami arrive as a series of several waves separated by periods typically in the _________ range.

Most of the 245,000 deaths from the 2004 Indian Ocean tsunami occurred in _______.

The deadly 1992 tsunami in Papua New Guinea was caused by ________.

The Hawaiian Islands cover less surface area than the slumps and debris avalanches that have fallen from them.

Removal of coral reefs along some stretches of the Indian Ocean coastline greatly reduced local damage from the 2004 tsunami.

The English language term tidal wave is a good description of a tsunami because of their relationship to ocean tides.

The great 1960 Chile earthquake (M 9.5)unleashed a tsunami that killed over 1,000 Chileans.These waves also killed 61 people in Hilo,Hawaii,14 hours after the earthquake,and another 185 people in ________,22.5 hours after the earthquake.

The 1946 April Fool's Day tsunami at Hilo,Hawaii,was caused by an earthquake in ________.

The captain of a ship tells you that he once experienced a huge tsunami while sailing in the Pacific Ocean several hundred miles from any landmass.You decide that this sounds a little farfetched because __________________.

In 1959,the water stored behind Hegben Lake Dam in Montana began to slosh violently back and forth in a series of oscillating waves.These seiches were caused by __________________.

The destructive power of a tsunami is due mostly to the great height of the wave.

Tsunami are created by big "splashes" made in the deep ocean by all but which of the following?

The sloshing of a swimming pool during an earthquake is called a seiche.

It is virtually impossible for ships at sea to survive a passing tsunami.

Tsunami have long wavelengths and very short wave heights in the open ocean.

A ____________ is an oscillating wave that sloshes back and forth within an enclosed body of waters such as a sea,bay,lake,or swimming pool.

Tsunami wavelengths can be as great as ____________.