1. Nature of Waves
Chapter 10.1

2. Wave
Repeating disturbance or movement that transfers energy through matter or space
Periodic motion
What types of objects/source cause transfer of energy through waves?

3. Waves and Energy Waves carry energy not matter!
Waves travel only as long as they have energy to carry
Wave intensity decreases with distance from the original source of energy

4. Mechanical Waves Waves that travel only through matter
Require medium (matter): Solid, liquid or gas
Which of the following are mechanical waves?
Sound
Light
Ocean Waves
Seismic waves

5. Two types of mechanical waves
Transverse Waves
Matter in the medium moves back and forth at right angles to the direction that the wave travels
Example: ocean waves
Compressional (Longitudinal)Waves
Matter in the medium moves back and forth along the same direction that the wave travels
Example: coiled spring toys and sound waves