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Published byKenny Hawe Modified over 10 years ago
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REVISION
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What wave is missing and how does its frequency compare with gamma waves?? (2)
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Which three types of waves are used in communications (3)
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Which electromagnetic waves can be used to cook these? (2)
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Which electromagnetic are used by each of these devices? (2) REMOTE CONTROLE MOBILE PHONE
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What is the difference between digital signals and analogue signals? (2)
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Explain how radio waves are received by houses on the other side of hills (3)
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Explain how optical fibres are used in surgery (4)
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Which three types of waves cause cancer? (3)
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What is section C called and is it solid, liquid or both? (2)
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Explain how microwaves cook food through to the centre (3)
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Between which two letters is the amplitude? (1)
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Why are more and more people getting skin cancer and why are dark skinned people less at risk than light skinned people ? (4)
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How do infrared waves cook through to the centre of food?? (2)
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Explain how microwave TV signals are sent long distances (3)
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Why do S waves show us there is a liquid layer inside the Earth? (3)
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