Ch 11 General Wave Properties
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What do waves transfer?
energy
Define transverse wave.
Waves which travel in a direction perpendicular to the direction of the vibrations.
Define longitudinal wave.
Waves which travel in a direction parallel to the direction of the vibrations.
Name the two types of waves.
transverse wave and longitudinal wave
Define the crest/trough of a wave.
Highest and lowest points of a wave that characterise transverse waves only.
Define the amplitude of a wave.
distance from the rest or central position in either direction to the furthest point.
Define the wavelength of a wave.
distance between any two consecutive crests or troughs (transverse wave) OR distance between any two consecutive compressions or rarefactions (longitudinal wave)
Define the period of a wave.
Time taken to generate one complete wave/vibration. OR Time taken for the crests or any given point on the wave, to move a distance of one wavelength.
Define the frequency of a wave.
Number of crest/trough that pass a point per second. OR Number of complete waves/vibrations generated per second.
Define compression.
Region of a wave with higher pressure
Define rarefaction.
Region of a wave with lower pressure
Define wavefront.
The line that joins all the peaks of a wave or all identical points on a wave is called the wavefront.
What is the formula for the speed of wave?
v = fλ
What is the relationship between f and T?
f = 1 /T OR T = 1 / f