1. The faster the end of the rope is ‘waggled’, the shorter the wavelength produced The wave equation

2. As the frequency goes up the wavelength goes down, Wave speed = frequency x wavelength v = f x m/s Hz m 2 wave lengths = 6m Find the wave’s speed if an object moves over 1/2 a wave every second. v = f x v = 1/2 Hz x 3m v = 1.5 m/s

4. The wave equation Calculate the speed of radio waves if the frequency of the induced current in an Ariel is 200,000 Hz and their wavelength is 1500m Wave speed = frequency x wavelength v = f x v = 200,000 Hz x 1500 m v = 300,000,000 m/s