Waves

Waves

1. WAVE SPEED = FREQUENCY X WAVE LENGTH

   • V = f x λ

2. FREQUENCY = 1/time period

3. Waves carry energy and information

4. Waves transfer energy, NOT matter

5. labelling a wave transverse:

6. Two types

   • Transverse
     • Side-Ways vibrations
       • 90 degree to direction of travel
     • Examples: Springs, Ripples
   • Longitudinal
     • Have vibrations on direction of travel
     • Example: Sound Waves

7. Refraction

   • The light at the start will be parallel.
   • It can change position depending on the objects desnity