4 Wave Properties Wavelength Wavelength, l, is the distance between two consecutive peaks.
5 Wave Properties Amplitude Amplitude is the height of the wave above or below the equilibrium point.
6 Wave Properties Frequency Frequency, f, is the number of waves passing a particular point in one second.Also known as pitch.
7 Examples of FrequencyWhat is the frequency of the second hand of a clock?Frequency = 1cycle/60 secWhat is the frequency of US Presidential elections?Frequency = 1 election/4 yrs
8 8. DOPPLER EFFECTRefers to the change in frequency when there is relative motion between an observer of waves and the source of the wavesDoppler with SoundDoppler with Water
9 The Doppler effect-Change in frequency due to the source or receiver greater the speed the source, greater the Doppler effect Stationary bugBug swimmingBlue Shift-increase in frequency Red Shift- Decrease in frequency
11 Bow wavesV-shaped pattern made by overlapping crest
12 Shock WavesProduced by supersonic aircraft, three-dimensional cone shapedSonic boom – sharp crack heard when conical shell of compressed air that sweeps behind a supersonic aircraft reaches listeners on the ground below.