P2 question and answer 4.0 / 5 based on 1 rating ? ScienceRadiationGCSEAQA Created by: rubiemayCreated on: 31-03-16 16:39 What is the order of the electromagnetic spectrum; starting with the wave with the least energy (longest wavelength)? Radio waves, microwaves, infrared, visible light, Ultra Violet, X-ray, Gamma rays 1 of 15 What takes carbon dioxide out of the atmosphere? Photosynthesis 2 of 15 What puts carbon dioxide back in the atmosphere? Burning fossil fuels 3 of 15 What part of the atmosphere absorbs UV radiation? The ozone layer 4 of 15 What is ionising radiation? Radiation that alters the make up of cells and charges it, 5 of 15 What are the names of the ionising radiation? UV, gamma and X-ray 6 of 15 What are the green house gases? Water vapour, methane and carbon dioxide 7 of 15 What is the name for packets of electromagnetic radiation? Photon 8 of 15 What are the benefits of sunbathing? Vitamin D 9 of 15 What are the disadvantages of sunbathing? Premature wrinkles and increase in risk of skin cancer 10 of 15 What are the advantages of using a digital signal instead of an analogue signal? Carry more information, maintain quality over long distance,far less noise 11 of 15 What type of waves do mobile phones use to carry information? Radiowaves 12 of 15 What are some of the dangers of using a mobile phone or living near a phone mast? risk increases for cancer, fatigue, depression and other illnesses. 13 of 15 How does a microwave work? he food contains water molecules which are made to vibrate by the microwaves. This means that food absorbs microwaves and gets hot. 14 of 15 What are the safety precautions on a microwave and why are they needed? the metal case and the metal grid on the door reflect microwaves back into the oven and it has a sealed door 15 of 15
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