Question

In an earthquake's p-wave, the material moves:

A. alternating compression and expansion
B. perpendicular to the direction of the travel
C. only through solids
D. the material doesn't move at all

Answer 1

In an earthquake's p-wave, the material moves in alternating compression and expansion. P-waves are a type of longitudinal wave that can travel through all states of matter.

Correct answer is A

Step-by-step explanation:

In an earthquake's p-wave, the material moves in alternating compression and expansion.

P-waves, or pressure waves, are a type of longitudinal wave that travel through solids, liquids, and gases.

They cause particles in the material to vibrate back and forth along the same direction as the wave's travel.

Correct answer is A