1. Section 1 The Nature of Waves
Chapter 10 Waves
Section 1 The Nature of Waves

2. What is a wave?
A repeating disturbance or movement that transfers energy through matter OR space

3. Examples of Waves
Ocean Waves Earthquakes Light

4. Waves and Energy
Waves are caused by a transfer of energy

5. Waves and Energy Example Pebble falling into a still pool of water.
Pebble transfers energy
water molecules
other water molecules

6. Waves and Matter
Waves can carry energy without transporting matter from place to place. Example: Boat passing another boat on the river.

7. Waves
Only travel as long as they have energy
* Produced by vibrations

8. Mechanical Waves Travel only through a medium
Medium- matter a wave travels through
Examples: Solid, liquid, gas, or a combo of them

9. Types of Mechanical Waves
Transverse Waves
Matter in medium moves back and right angles to wave’s direction.
Examples:
Ocean Waves
You shaking a rope

10. Types of Mechanical Waves
2. Compressional Waves Matter in medium moves along same direction wave travels. Example: Squeezing and releasing the coils in a spring.

11. Types of Mechanical Waves
Compressional Waves are also called Longitudinal Waves

12. Sound Waves Compressional Wave
Air molecules compressed when object produces vibration.

13. Water Waves Not purely transverse
Some water moves up and down BUT some water moves back and forth.

14. Water Waves Produced by wind Size of wave depends on: 1. Speed of wind
2. Distance wind blows
3. How long wind
blows

15. Seismic Waves Combo of transverse and compressional waves
Caused by Earth’s crust breaking
Produces vibrations 
creates seismic waves