Question

p.8.6 wicor+ vocab 1
what happens to particles in a longitudinal wave?
they do not move at all
they move up and down
they move back and forth in the same direction as the wave
they move perpendicular to the wave

Explanation:

In a longitudinal wave, particles oscillate parallel to the wave's direction. Option C describes this motion. Option A is incorrect as particles do move. Option B (up - down) and D (perpendicular) describe transverse wave particle motion.

Answer:

C. They move back and forth in the same direction as the wave