3.23 know that sound waves can be reflected and refracted

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

3.7 use the above relationships in different contexts including sound waves and electromagnetic waves

______________

3.2 explain the difference between longitudinal and transverse waves

3.6 use the relationship between frequency and time period:

time period = 1 / frequency

T = 1 / f