* Reflection: Light bounces off the surface. The angle of incidence (the angle at which the light hits the surface) is equal to the angle of reflection (the angle at which the light bounces off). Think of a mirror reflecting your image.
* Refraction: Light bends as it passes from one medium (like air) to another (like water). This bending occurs because the speed of light changes as it moves through different materials. Think of a straw appearing bent when placed in a glass of water.
In simpler terms:
* Reflection: Light bounces back.
* Refraction: Light bends and changes direction.