Question

which kind of disturbance is created by moving a spring toy up and down?
parallel to the wave motion
in a circular motion
perpendicular to the wave motion
in the same direction as the wave motion

Explanation:

When a spring toy (like a Slinky) is moved up and down, the disturbance (the motion of the particles in the spring) is perpendicular to the direction of the wave motion along the spring. Transverse waves have particle motion perpendicular to wave propagation. Moving the spring up - down creates a transverse wave, so the disturbance is perpendicular to the wave motion.

Answer:

C. perpendicular to the wave motion (assuming the options are labeled A, B, C, D with the third option being "perpendicular to the wave motion")