(d) show an understanding that energy is transferred due to a progressive wave.

(f) show an understanding of and apply the concept that wave from a point source and travelling without loss of energy obeys an inverse square law to solve problems.

**Transverse and Longitudinal Waves**

(g) analyse and interpret graphical representations of transverse and longitudinal waves.

**Polarisation**

(h) show an understanding that polarisation is a phenomenon associated with transverse waves.

(i) recall and use Malus’law (intensity

) to calculate the amplitude and intensity of a plane polarised electromagnetic wave after transmission through a polarising filter.

**Determination of frequency and wavelength of sound waves**

(j) determine the frequency of sound using a calibrated oscilloscope.

(k) determine the wavelength of sound using stationary waves.*