1. Unit 9 Waves: Diffraction, Refraction, Reflection
02/04/19

2. Warmup
Spring waves travel faster when the tension in the spring is higher/lower (pick one)
A sound wave is propagating from left to right below.
What direction is the oscillation of a single particle?

3. Light is a wave and follows wave rules
Wave is transport of energy without transport of matter
Velocity = wavelength x frequency

5. Reflection
“Change in direction of wave when a wave strikes the boundary of a different medium, resulting in the wave bouncing off the medium.”
Example: glare

6. Diffraction “Spreading of wave around obstacles/slits in its path.”
Type of Interference interaction
Interference: two or more waves interact and reinforce (+) or cancel each other (-)

7. Refraction
“Bending of wave when it enters different medium where it’s speed is different.”

8. Cooldown
What is the relationship between frequency and wavelength? direct/inverse/quadratic/logarithmic (circle one) Explain your choice
Match the words below to their definitions. Draw a picture illustrating each word.
Diffraction bending and changing direction of wave
Refraction bouncing of wave
Reflection bending of wave through/around openings
DUE TODAY: LAB, Harmonic Motion (70 max), and Standing Waves (50 max)
Work on Wave Actions Worksheet (due Wednesday)