Which of the following statements are correct?

1. S- waves travel more quickly through earth's crust

2. P- waves are more destructive

a. Only 1

b. Only 2

c. Both

d. None

ANSWER: None

Explanation:

P- waves travel more quickly through earth's crust. These can travel at nearly twice the speed of S waves. S- waves are more destructive than P-waves because of their larger amplitudes.