Which type of wave's oscillations/vibrations are perpendicular (at right angles) to the direction of energy transfer?

Which type of wave's oscillations/vibrations are parallel to the direction of energy transfer?

Which one of these examples is a transverse wave?

Which one of these examples is a longitudinal wave?

What term is used to describe area in longitudinal waves where the particles are pulled farther apart?

What term describes the area in longitudinal waves where the particles are squashed closer together?

What term is used to describe maximum displacement of a point on the wave from its undisturbed position?

What term is used to describe the distance from a point on one wave to the equivalent point on the adjacent wave?

What term is used to describe the number of waves passing a fixed point per second?

What property of a wave always stays the same when it travels from one medium to another?

What happens when waves are transmitted at a boundary between two substances?

What happens when waves are absorbed by a substance?