Question

name: _
reflection, refraction, and absorption

1. what is reflection?
2. what is refraction?
3. what is absorption?

Explanation:

1. Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. For example, light reflecting off a mirror.
2. Refraction is the change in direction of a wave due to a change in its speed. This occurs when a wave passes from one medium to another at an angle. For instance, a pencil appearing bent in water due to light refraction.
3. Absorption is the process by which a substance takes in another substance, such as a gas or liquid. In the context of waves like light, it means the energy of the wave is absorbed by a material and converted into other forms of energy (usually heat).

Answer:

1. Reflection is the return of a wavefront into the medium from which it originated at an interface between two media.
2. Refraction is the change in direction of a wave due to a change in its speed when passing between media.
3. Absorption is the process where a substance takes in a wave (e.g., light) and converts its energy into other forms.