1. What is a wave? Speed, wave length and frequency

2. One vertical Pulse Direction of wave propagation Direction of oscillation = transverse wave Waves on strings

3. One horizontal Pulse Direction of propagation Direction of oscillation = longitudinal wave Compression waves sound

4. Reflection at a fixed end Reflected pulse is inverted

5. Reflection at a loose end Reflected pulse is not inverted

6. Wave motion Displacement versus time at fixed position time period y

7. Wave motion Stop! Snapshot at a fixed time. Distance between equivalent points on the wave = wave length The wave travels a distance of one wave length in the time of one period

8. Speed of the wave Speed = Distance Time = Wave length period