What is the picture pointing to?

What does this show?

What does this show?

What does this show?

Draw a picture of a wave with a long wavelength.
Draw a picture of a wave with a short amplitude.
Draw a picture of a wave with a short wavelength.
Draw a picture of a wave with a long amplitude.
Height of a wave measured from midway between the highest and lowest points
The distance between the same two points on a wave (i.e., crest to crest)
A disturbance that transfers energy from place to place
The highest point on a wave