1. Today’s Agenda…12/2
Bellringer: What is the relationship between waves, energy, and matter?
Review / Finish Notes on Waves
Notes on Wave Behavior – Study Pack #12
Quiz on Monday & Test next Wednesday

2. Wave Behavior
Study Pack #12

3. Reflection Occurs when a wave hits a surface and bounces off Examples:
You can hear your echo because sound waves bounce off walls and floors
You can see your reflection because light bounces off your face and a mirror

4. Reflection
The image formed by a reflection depends on how smooth the surface is
Page 237, Figure 11

5. Refraction
The bending of a wave as it moves from one medium into another
Example: Objects under water look like they are in a different position or are broken

6. Refraction Rainbows are caused by refraction
When sunlight enters a rain drop, the light bends
Because the light contains different colors and the colors bend at different angles, you can see all the different colors as the light exits the rain drop
Page 239

7. Diffraction
The bending of waves around an object (a barrier or obstacle)
Example: You may be able to hear the band playing down a hallway

8. More! 
BrainPop