1. Behavior of Waves

2. What is reflection?
Reflection is when a wave bounces off a surface that it cannot pass through.
Examples of reflections:
Sound bouncing off a wall in an echo
Water waves bouncing off the side of the bathtub.

3. Characteristics of Reflections
Waves that are reflected have the same speed and frequency.
The wave can be flipped upside down.
The troughs become crests and crests become troughs.

4. What is Refraction?
Refraction is the bending of a wave as it enters a new medium at an angle.
One side of the wave is moving faster than the other side so the wave bends toward the slower medium

5. What is diffraction?
Diffraction is the bending of a wave as it moves around an obstacle or passes through a narrow opening.

6. What is interference?
Interference is what occurs when two or more waves overlap and combine together.
Two types:
Constructive interference
Destructive interference

7. Constructive Interference
When two or more waves combine to produce a wave with a larger displacement.

8. Destructive Interference
When two or more waves combine to form a wave with smaller displacements.