describe wave motion in terms of amplitude, wavelength, frequency and period
describe wave motion in terms of amplitude, wavelength, frequency and period
define wavelength and frequency
describe and apply the relationship between wavelength, frequency and wave velocity
apply formulae relating velocity, frequency and wavelength
describe differences between transverse and longitudinal waves
direction of travel and direction of vibration
show how changes, in velocity, frequency and wavelength, in transmission of sound waves from one medium to another, are inter-related
describe the effects of reflection, transmission, and absorption of waves at material interface
examples such as ultrasound and sonar
**describe, with examples, processes which convert wave disturbances between sound waves and vibrations in solids
knowledge of a simple structure of the parts of the ear is expected**
**explain why such processes only work over a limited frequency range, and the relevance of this to human hearing
why hearing (audition) changes due to ageing**
describe how ripples on water surfaces are used to model transverse waves whilst sound waves in air are longitudinal waves, and how the speed of each may be measured
describe evidence for the cases of ripples on water surfaces and for sound waves in air that it is the wave that travels and not the water or the air