1. P1 revision clips

2. Heating 1.Define specific heat capacity https://www.youtube.com/watch?v=gDbo_v GOycU 2. Explain why the temperature doesn’t change during a change of state. 3. Describe a thermogram 4. How can energy transfer be calculated?

3. Keeping homes warm https://www.youtube.com/watch?v=yUEPGMnRqG s 1.Draw diagrams to show conduction, convection and radiation. 2.Explain how loft insulation, shiny surface behind radiator and double glazing work, in terms of conduction, convection and radiation. 3.What is the equation for efficiency? https://www.youtube.com/watch?v=wr8Z4SCETPs

4. Spectrum of Waves https://www.youtube.com/watch?v=UtK4JjQXZ3g What is refraction? What is diffraction? https://www.youtube.com/watch?v=bjOGNVH3D4 Y How does the size of the receiver relate to the wavelength? LABEL THIS TRANSVERSE WAVE; Trough Crest Amplitude Wavelength frequency

5. Light https://www.youtube.com/watch?v=0MwMkB ET_5I Why does TIR occur? https://www.youtube.com/watch?v=SMQXD 2p3syA How does a CD work? What does LASER stand for?

6. Explain the advantages and disadvantages of using light, radio and electrical signals for communication. (6)