1. Pre-Assessment

2. Wave Building Blocks
Pulses

3. Definitions PULSE - a single vibratory disturbance
Transmits ENERGY but not MASS
AMPLITUDE - height above equilibrium and directly related to ENERGY.
MEDIUM - a continuum of particles of the same type that stores and releases energy.
As a pulse travels in a medium it…
DOES NOT LOSE SPEED
LOSES AMPLITUDE (ENERGY) from friction

4. Phenomenon #1 - Reflection
Fixed Point
Floating Point
before
before
after
after

5. Changing Mediums Fast  Slow Slow  Fast
If a pulse changes mediums it…
MAY CHANGE SPEED
MAY CHANGE AMPLITUDE
PARTLY REFLECTS
before
before
after
after

6. Building a Model of Wave Interference using slinky*
Pulses, Reflection, Interference

7. Summary of Phenomenon #2 - Interference
Constructive
Destructive

9. Choice 3

11. Choice 2

13. Choice 1

14. Predictions based on our model*

15. One minute to prepare
You will need: - A whiteboard - A marker - An eraser

19. Choice 4

20. Summary
Takeaways
Relating it back to real life (Noise cancelling headphones)

21. Homework
Watch video online (Wave Basics – APlusPhysics)