4Wave Properties Wavelength Wavelength, l, is the distance between two consecutive peaks.
5Wave Properties Amplitude Amplitude is the height of the wave above or below the equilibrium point.
6Wave Properties Frequency Frequency, f, is the number of waves passing a particular point in one second.Also known as pitch.
7Examples 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
88. 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
9The 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
11Bow wavesV-shaped pattern made by overlapping crest
12Shock 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.