Question

a straight glass rod appears to bend when placed in a beaker of water, as illustrated in the diagram. what is the best explanation of what is happening? a) light travels faster in water than in air. b) light is refracted as it travels from air to water.

Explanation:

Light travels slower in water than in air. When light passes from air to water, it changes speed and direction, a phenomenon called refraction. This causes the glass rod to appear bent.

Answer:

The best explanation is that light is refracted as it travels from air to water.