P2 0.0 / 5 ? PhysicsRadioactivityGCSEOCR Created by: meganhiggins122Created on: 29-04-15 23:14 Which of these radiations is totally absorbed by the atmosphere? gamma rays 1 of 11 Which electromagnetic radiation provides the energy for photosynthesis? Light 2 of 11 Why are microwave ovens safe to use? because microwaves are reflected by the metal sides and door screen. 3 of 11 Which of these is a benefit of sunbathing? Vitamin D produced in the skin 4 of 11 Which of these is a risk of sunbathing? Skin cancer 5 of 11 Employers must always reduce risks to much as they can, while still running their businesses. What is this principle called? ALARA principle. 6 of 11 What are the 'packets' of energy in a beam of electromagnetic radiation called? photons 7 of 11 Materials are heated when they absorb: electromagnetic radiation of any type. 8 of 11 If a detector is moved away from the source, what happens to the intensity detected? it decreases 9 of 11 Why does ionising radiation cause chemical reactions when it is absorbed? The radiation heats the absorber. 10 of 11 If there is a correlation between a factor and an outcome, what is needed to show that the factor causes the outcome? a scientific explanation for the way in which the factor can cause the outcome 11 of 11
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