Waves

Waves

1. Types

   • Transverse
     • waves that move up and down are called transverse and the oscillate the top of the wave is the crest
     • the oscillations of a transverse wave are perpendicular to the direction in which the waves transfer energy
     • all electromagnetic waves + ripples are transverse waves
   • Longitundinal
     • longitudinal waves are like a slinkey, there is areas of compression (coils squashed together) and areas of rarefraction(coils spreading out
     • the oscillations of a longitudinal wave are parallel to to the direction in which the waves transfer energy
     • Sound waves in air are longitudinal

2. waves transfer energy without transferring matter

3. Mechanical

   • need a medium (substance) to travel through, can be transverse or longitudianl