P2 - Radiation and life 0.0 / 5 ? PhysicsElectromagnetic SpectrumGCSEOCR Created by: Megs555Created on: 26-04-16 11:22 What part of the EM spectrum has the highest frequency? Gamma radiation 1 of 11 What part of the EM spectrum has the lowest frequency? Radiowaves 2 of 11 What are microwaves used for? Cooking 3 of 11 Which radiation is used to take medical images of bones? X-rays 4 of 11 What speed does EM radiation travel through a vacuum? 300,000 m/s 5 of 11 What are the "packets" of energy in a beam of EM radiation called? Photons 6 of 11 Which part of the EM spectrum has the highest energy photons? Gamma rays 7 of 11 What are ions? Charged atoms 8 of 11 Which parts of the EM spectrum are ionising radiation? UV, X-rays and gamma rays 9 of 11 If a detector is moved away from a source, what happens to the intensity detected? It decreases 10 of 11 Why does ionising radiation cause chemical reactions when absorbed? Because the radiation heats up the absorber 11 of 11
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