Which characteristics of tsunamis are true?

a. they cause the ocean to briefly drain away from the shore.
b. they can travel as fast as 500 miles per hour.
c. they occur a day or two after an earthquake.
d. they are measured by how far they travel.

the Answer would be A they cause the ocean to briefly shore and drain away from it shore because that's what a tsunami do

They can travel as fast as 500 miles per hour.

They cause the ocean to briefly drain away from the shore.

Explanation:

1.31 Unit Test: Asia

make flash cards, or have a 'study date' with your friends or something! always works for me! : d

answer; allows decision to stand;