1. Energy Travels in waves

2. 3. A girl is riding her bicycle down a hill without pedaling
3. A girl is riding her bicycle down a hill without pedaling. She speeds up as she goes down the hill, and the tires get a little warmer. What energy transformations happen while she is going down the hill?

3. 4. Why does the ball on the pendulum stop swinging?

4. How do you think they could have formed?
How would you describe the differences between the three waves below. Hint: color doesn’t count on this one 
How do you think they could have formed?

5. Waves A way to transfer energy
A disturbance in matter that transfers energy from one place to another

6. Wave Types Waves that require a medium or matter to transfer energy
Mechanical Waves
Waves that require a medium or matter to transfer energy
- Transverse
- Longitudinal
- surface waves

7. Transverse Waves

8. Longitudinal Wave

9. Simulation

12. Distance between crests
Wavelength
Distance between crests

13. Frequency
How fast or slow the waves are moving. Measured in Hertz (Hz) or Cycles per sec

14. Amplitude
The height of the wave. It is determined by the amount of energy in the wave.

16. Identifying Characteristics of Waves
1. wavelength
2. amplitude
3. frequency
4. color

17. A student has a glass of water and a block of ice
A student has a glass of water and a block of ice. Both the water in the glass and the block of ice are made up of the same number of molecules. The average speed of the molecules of the water is greater than the average speed of the molecules of the block of ice. Which has more thermal energy and why?