Waves

Waves

1. Different types of waves

   • Water waves
     • Move away from where something has hit the water
     • 90 degree angle
   • Sound waves
     • Longitudinal
     • Same direction as travel
     • Travels faster in a solid
     • Produced by all vibrating objects
     • Collected by the outer ear
     • Vibrate the eardrum
     • Phones and microphones have diaphragm, which does the same thing as an ear drum
   • Light Waves

2. Waves hitting each other

   • Called superposition
   • If hit each other while 'in step' they combine
     • This also increases the amplitude
   • If they hit 'out of step', they cancel each other out

3. Loud speakers

   • Turns electrical energy into kinetic energy
   • Moves the cone which creates sound waves

4. Amplitude = height of the waves