Question

What happens to the wavelength of water waves when the pass over a shallower water

Answer 1

But as waves enter shallow water, interaction with the bottom alters the waves. Wave speed decreases, wavelength shortens and wave height increases.

Answer 2

Answer:

But as waves enter shallow water, interaction with the bottom alters the waves. Wave speed decreases, wavelength shortens and wave height increases. Eventually shallow-water waves become so high and unstable that they break and create surf.