Flashcards
Wireless signals (P1)
Flashcards do conjunto (8)
- 1What is wireless technology used by-radio and television
-laptops
-mobile phones - 2What are radio waves reflected and refracted in ?The earth's atmosphere
- 3What does the amount of refraction depend on?The frequency of the wave
- 4When is there less refraction?At higher frequencies
- 5What frequency is radio broadcast signals?A particular frequency
- 6Why can the same frequency be used by more than one radio station-the radio stations are too far away from each other to interfere
-but in unusual weather conditions, the radio waves can travel further and the broadcasts interfere - 7How can interference be reducedBy using digital signals
- 8Is Digital Audio Broadcasting(DAB) good?-It provides a greater choice of radio stations
-but the audio quality is not as good as the FM signals are currently used
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- Descrição
- GCSE Physics (P1) FlashCards sobre Wireless signals (P1), criado por Morgan Cheney em 04-05-2017.
- Criado por
- Morgan Cheney
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