P2 – Radiation and Life Revision worksheet List the EM spectrum : Which part of the EM spectrum has: The highest wavelength The highest frequency The highest energy Define what is meant by Intensity… What is a photon? How does the frequency of electromagnetic radiation relate to its energy? What does the amount of energy transferred depend on? How fast do EM waves travel through a vacuum? P2 – Radiation and Life Revision worksheet How do microwaves work? What parts of a microwave oven protect users from the radiation? How can exposure to ionising radiation affect living cells? How does distance affect intensity? Why? What is meant by ionising radiation? Give examples ionising radiation. What is meant by non-ionising radiation? Give examples non-ionising radiation. Explain what the ozone layer does. What is meant by a principal frequency? What are the greenhouse gases?

Sketch the carbon cycle. Explain how the following affect the carbon cycle: Combustion Respiration Photosynthesis Decomposition How has human activity affected the carbon cycle? Describe, with a picture: An analogue wave A digital wave What could be the consequences of global warming? Briefly describe how information can be transmitted What do we store information as? How does the amount of information affect the quality of the sound or image? What are the advantages of using digital signals? Explain why.