Tsunami Review

What can cause a tsunami?

• Landslide

• Underwater earthquake

• Volcanic eruption

• All of the above

Do all undersea earthquakes trigger a tsunami?

• YES

• NO

What does the word "tsunami" mean in Japanese?

• Tidal wave

• Harbor wave

• Killer wave

• Century wave

What is the deadliest tsunami ever recorded?

• The 1782 South China Sea tsunami

• The 1868 northern Chile tsunami

• The 1883 South Java Sea tsunami

• The 2004 Indian Ocean tsunami

How fast can a tsunami travel?

• Up to 100 miles an hour (160 kilometers an hour)

• Up to 200 miles an hour (320 kilometers an hour)

• Up to 500 miles an hour (800 kilometers an hour)

• Up to 1,000 miles an hour (1,600 kilometers an hour)

What is frequently a warning sign of an impending tsunami?

• Winds suddenly change direction

• The sky suddenly clears

• Seawater suddenly retreats from the shore

• All of the above

Regular waves are caused by

• underwater disturbances such as earthquakes, landslides, and volcanoes.

• wind and the gravitational pull of the moon.

A wave has both

• a trough and a crest

• a low and a middle

• a high and a medium

What do tsunami look like in the middle of the ocean?

• Hardly noticeable waves

• Small cresting waves (white caps)

• Huge cresting waves (white caps)

• Huge non‐cresting waves (non-white caps)

The distance between two crests or two troughs of a wave is called:

• frequency
• amplitud
• wavelength
• hertz