Which would best model the motion of P waves?(1 point)

Question

Responses

attaching one end of rope to a chair and moving the other end from side to side
attaching one end of rope to a chair and moving the other end from side to side

pulling one end of a spring and releasing it
pulling one end of a spring and releasing it

holding a ball up high and releasing it
holding a ball up high and releasing it

attaching one end of rope to a chair and moving the other end up and down
attaching one end of rope to a chair and moving the other end up and down

Answer 1

The best model for the motion of P waves (primary waves) is:

attaching one end of rope to a chair and moving the other end from side to side.

P waves are longitudinal waves, meaning they move in the same direction as the wave propagation. Moving the rope side to side illustrates how particles in a medium compress and expand in the direction of wave travel, which is similar to how P waves move through the Earth.