Outcomes

Pupils can state and use the Law of Reflection.
Pupils can explain refraction as due to a change of speed in different media.
Pupils can explain diffraction as the spreading of a wave around an object.
- Pupils can sketch different diffraction effects where λ << a; λ = a; λ >> a

Specification References

Use small bulb, radiant heater, two parabolic mirrors, camera and temperature probe to demonstrate that heat waves are reflected just as light waves are.

Show pupils aerial photograph of Varna, Bulgaria and discuss the image. What wave effects are visible?