Waves 2 PDF

Properties of waves And some Physics Phun Transverse Longitudinal Transverse waves Peak/crest Trough Examples of transverse waves Water ripples Light On a rope/slinky Earthquakes (S-waves) Longitudinal waves Compression...

Properties of waves And some Physics Phun Transverse Longitudinal Transverse waves Peak/crest Trough Examples of transverse waves Water ripples Light On a rope/slinky Earthquakes (S-waves) Longitudinal waves Compression Rarefaction  Examples of longitudinal waves Sound Slinky Earthquakes (P-waves) S-waves and P-waves Amplitude, A Amplitude In a sound wave, the higher the amplitude the louder the sound. Frequency, f. Height (m) 2 The number of waves per second. 1 If one wave passes in one second it has a 0 frequency of Time (s) one Hertz or 1 2 Hz. 1 This is the unit of frequency. 2  lambda Wavelength, λ In visible light, the wavelength affects the colour of the light. The length of one complete wave. Wavelength on a longitudinal wave λ λ Wave speed, v The speed at which a wave passes an observer. 330 m.s-1 The wave equation v=f λ Wave speed (m/s) Wavelength (m) Frequency (Hz) Questions to do now 1) A water wave has a frequency of 2 Hz and a wavelength of 0.3 m. How fast is it moving? 0.6m/s 2) A water wave travels through a pond with a speed of 1 m/s and a frequency of 5 Hz. What is the wavelength of the waves? 0.2m 3) The speed of sound is 330 m/s (in air). When Dave hears this sound his ear vibrates 660 times a second. What was the wavelength of the sound? 0.5m