Question

Which best describes what happens when light traveling through air enters water at an angle?

It moves along straight lines in air and changes direction when it enters water.
O It moves in a curve in air and moves in straight lines when it enters water.
O It moves along straight lines in air and continues along the same lines when it enters water.
O It moves in a curve in air and continues moving in the same curve when it enters water.
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Answer 1

When light traveling through air enters water at an angle, it moves in a curve in air and changes direction when it enters water. This bending of light is known as refraction. The angle at which the light bends depends on the difference in the refractive indices of the two media, which is why the light bends when it enters the denser medium of water.