Giant tsunami are usually the result of _____.
a. earthquakes only
b. landslides only
c. volcanic eruptions only
d. earthquakes, volcanic eruptions, or landslides
e. earthquakes or landslides, but not volcanic eruptions
Question 2
Upon landfall, a tsunami will move ____.
a. at walking speed
b. faster than it traveled in the open ocean
c. at the speed of a helicopter or small airplane
d. much too fast for a person to outrun
e. at the speed of a commercial jet