7. _______________ A device called a seismometer can detect large earthquakes happening
underwater. When the device sends this data to government centers, the people in the centers
can warn people of a tsunami. Unfortunately, however, this gives a lot of false warnings since
only about 25% of earthquakes cause a tsunami.
(A) One way of predicting tsunami is to look for underwater earthquakes.
(B) One way of preventing tsunami is to use a seismometer.
(C) Earthquakes, volcanic eruptions and other underwater explosions all have potentials to create
a tsunami.
(D) Regions with a high tsunami risk typically use warning systems to warn the population before
the wave reaches land.
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