1. A quick review and then some
Waves
A quick review and then some

2. Parts of a Transverse Wave
Crest
Wavelength
Amplitude
Trough

3. Wave Interactions
Reflection - a wave bounces and goes in a new direction
Water hitting the wall of a pool
Light reflecting off a mirror

4. Wave Interactions
Refraction - a wave passes through an obstacle (from one medium to another)
Glasses change light waves so you can see better

5. Wave Interactions
Diffraction - a wave bending around a corner or going through a hole
Sound does this better than light

6. Wave Interactions Interference – when 2 or more waves come together
Constructive Interference
Destructive Interference

7. Dead Spots Dead spots are literally a spot where no sound can be heard
In an auditorium two speakers cancel each other out
These happen because of destructive interference

8. Wave Interactions
Absorption - a wave gets smaller and smaller and eventually disappears
Sunglasses
Heavy curtains in an auditorium