#3.2
explain the difference between longitudinal and transverse waves
#3.3
know the definitions of amplitude, wavefront, frequency, wavelength and period of a wave
#3.4
know that waves transfer energy and information without transferring matter
#3.5
know and use the relationship between the speed, frequency and wavelength of a wave:
wave speed = frequency × wavelength
\(v = f × λ\)
#3.6
use the relationship between frequency and time period:
\(\text{frequency} = \dfrac{1}{\text{time period}}\)
\(f = \dfrac{1}{T}\)
#3.7
use the above relationships in different contexts including sound waves and electromagnetic waves
#3.8
explain why there is a change in the observed frequency and wavelength of a wave when its source is moving relative to an observer, and that this is known as the Doppler effect
#3.9
explain that all waves can be reflected and refracted