CONCEPTS: Properties of longitudinal and transverse waves: frequency, amplitude, wavelength, velocity Wave phenomena: reflection, refraction, diffraction, interference, polarisation Diffraction effects at an obstacle at a slit with reference to significance of the wavelength Doppler Effect (calculations at higher level only)
ACTIVITIES: Demonstration of wave phenomena Demonstration of the Doppler Effect
SCIENCE,TECHNOLOGY AND SOCIETY: Everyday examples of waves (radio waves, waves at sea, seismic waves) Everyday examples of the Doppler Effect (red shift of stars, speed traps)
PHYSICAL QUANTITIES INTRODUCED IN THIS CHAPTER: Quantity