Here's what actually happens:
* Refraction: When light travels from a denser medium (like water) to a less dense medium (like air), it bends away from the normal. The normal is an imaginary line perpendicular to the surface where the light enters the new medium.
* Why it bends: Light travels at different speeds in different materials. When it enters a less dense medium, it speeds up. This change in speed causes the light to change direction, bending away from the normal.
Think of it like this: Imagine a car driving on a smooth, flat road (the dense medium). As the car drives onto a rough, sandy road (the less dense medium), its speed decreases. The car might veer slightly off course, much like light bends when it enters a less dense medium.
Let me know if you'd like a more detailed explanation or want to see a diagram!
