3bProperties of waves

Syllabus objectives

• 3.2explain the difference between longitudinal and transverse waves
• 3.3know the definitions of amplitude, wavefront, frequency, wavelength and period of a wave
• 3.4know that waves transfer energy and information without transferring matter
• 3.5know and use the relationship between the speed, frequency and wavelength of a wave: wave speed = frequency × wavelength v = f × λ
• 3.6use the relationship between frequency and time period: 1frequency time period= Tf 1=
• 3.7use the above relationships in different contexts, including sound waves and electromagnetic waves
• 3.8explain 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
• 3.9explain that all waves can be reflected and refracted