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GCSE
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More cards in this set
Card 16
Front
What are the advantages of using light to communicate?
Back
Card 17
Front
Explain the properties of laser beams which makes them a)monochromatic and b)coherent.
Back
Card 18
Front
How do CD players use Lasers to read digital information?
Back
Card 19
Front
What are the uses for infra-red around the home?
Back
Card 20
Front
Explain why radio waves are mainly used for communication
Back
Card 21
Front
What are the advantages and disadvantages of DAB radio?
Back
Card 22
Front
Describe how satellites are used for communication
Back
Card 23
Front
What is the difference between analogue and digital signals?
Back
Card 24
Front
Why are CFCs so bad?
Back
Card 25
Front
Name and describe two types of waves produced in an earthquake
Back
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