1. Why are the elephants acting strange?
A. They are not used to seeing fish.
B. They dislike wading into the ocean.
C. They can sense something out of the ordinary.
D. They see the ocean drawing back from the beaches.

→ They stamp their feet and motion toward the hills. The sea draws back from the beaches. Fish flop in the mud. Suddenly, a huge wave appears. This is no ordinary wave.

2. What is this passage mostly about?
A. How to prepare for tsunamis.
B. Scientists who predict tsunami waves.
C. Similarities and differences between wave types.
D. Causes and effects of tsunamis.

→ For a tsunami to occur, there must be some kind of force that causes the ocean water to become displaced. Most tsunamis are caused by underwater earthquakes. However, volcanoes, landslides, large icebergs, and even meteorites are capable of causing one of these mighty waves. Tsunamis are extremely powerful. Because tsunami waves are so strong, they can kill people, damage property, and completely ruin an ecosystem in just one hour.

3. Which does not cause a tsunami?
A. earthquakes B. mudslides C. volcanic eruptions  D. meteorites

→ Most tsunamis are caused by underwater earthquakes. However, volcanoes, landslides, large icebergs, and even meteorites are capable of causing one of these mighty waves.

4. Tsunamis cause so much destruction because they.
A. can be predicted by scientists
B. break on the coast, unlike normal waves
C. are caused by volcanoes, landslides, and meteorites
D. can be as tall as a ten-story building

→ A tsunami wave can travel as fast as a jet plane and can be as tall as a ten-story building.

5. We can conclude from the last paragraph that.
A. a tsunami warning is more serious than a watch
B. a tsunami watch is more serious than a warning
C. a tsunami warning and watch are equally serious
D. a tsunami warning and watch both mean a tsunami has formed

→ A warning means that a tsunami will very likely hit soon. A watch means that conditions are favourable for a tsunami.