Final answer:
When light waves move from air into water, they will be refracted or bent due to the difference in refractive indices. Some of the light may also be reflected and transmitted through the water surface.
Step-by-step explanation:
When light waves move from air into water, they will experience a phenomenon called refraction. Refraction is the bending of light as it passes from one medium to another with a different refractive index. In this case, the light wave will be refracted or bent as it enters water, causing it to change direction.
This is because the refractive index of water is higher than that of air, meaning that light travels slower in water than in air. As a result, the light wave will bend towards the normal (an imaginary line perpendicular to the surface) when it enters water.
Furthermore, some of the light may also be reflected and transmitted through the water surface depending on the angle of incidence and the properties of the materials involved.
Learn more about Refraction of light