Waves

Waves

1. A wave transfers energy away from a vibrating source

   • frequency F is the number of waves passing a point per second, measured is hertz
     • Time period T = the time taken for the source to produce 1 wave is called the period. T is measured in seconds
       • frequency f = 1/T , units Hertz(Hz)

2. Wavelength λ = the distance between a particular point on a wave and the same point on the next wave,(from crest to crest or trough to trough)

3. Amplitude A = the maximum displacement of a particle from its rest position (more amplitude means more wave energy)

4. Longitudinal wave = when particles vibrate parallel to the wave direction,(sound waves)

5. Transverse wave = when particles vibrate perpendicular to the wave direction,(water waves)

6. Wave equation

   • wave speed (metre/second,m/s) = frequency(hertz, Hz) x wavelength(metre,m) v = f λ