1. Relfection, Refraction, Diffraction.
Wave Behavior
Relfection, Refraction, Diffraction.

2. Reflection
Reflection occurs when a wave strikes an object and bounces off of it.
All types of wavesincluding sound, water, and light wavescan be reflected

3. Reflection
When a wave bounces off a barrier or surface it is said to be reflected. How much of the wave that is reflected depends on the difference in the densities between the two mediums.

4. Echo
Sometimes when the sound waves hit another object, they reflect off it and come back to you.
Your ears hear the sound again, a few seconds after you first heard your footstep.
Reference echolocation

5. Reflection
Reflection is when a wave encounters a new medium that acts as a barrier that does not absorb the entire wave’s energy. This causes the wave to return to the original medium.
All types of waves can be reflected.

6. Types of Reflection

7. Refraction
When a wave passes from one medium to anothersuch as when a light wave passes from air to waterit changes speed.
If the wave is traveling at an angle when it passes from one medium to another, it changes direction, or bends, as it changes speed.

8. Refraction
Refraction is the bending of a wave caused by a change in its speed as it moves from one medium to another.

9. Sound refraction
Sound wave will refract if there is a difference in air temperature.
The different densities cause the waves to bend.