AND ANSWERS 2023
Transverse waves
The vibrations are at right angles to the direction of travel.
Longitudinal waves
The vibrations are along the same direction as the direction of travel.
Examples of transverse waves
Light and other types of electromagnetic radiation, as well as water waves and S waves (a type
of seismic wave).
Examples of longitudinal waves
Sound waves and waves in a stretched spring, and P waves.
Equation linking time, period and frequency
Period = 1/frequency
Equation linking wave speed, frequency and wave length
Frequency = wave speed/wave length
The range of human hearing
20 to 20,000 hertz.
Amplitude
The maximum displacement of points on a wave, from a crest or trough to the middle.
, Unit of frequency
Hertz (Hz)
What wavelength is measured in
Metres (m)
The frequency of a wave
The number of waves passing a point in a certain time.
Crest
The highest point on a wave.
Wavespeed
How far the wave travels in a certain time. (Sometimes called the velocity of a wave).
Trough
The lowest point of a wave.
Wavelength definition