Radio Waves (AQA GCSE Physics): Flashcards
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Practise the cards
10 cards from this deck
What type of wave are radio waves?
What type of wave are radio waves?
Electromagnetic wave
Wavelength of radio waves in EM spectrum
Wavelength of radio waves in EM spectrum
Longest wavelength
Frequency of radio waves in EM spectrum
Frequency of radio waves in EM spectrum
Lowest frequency
How are radio waves produced?
How are radio waves produced?
Oscillations in electrical circuits
What does AC in an antenna do?
What does AC in an antenna do?
Causes electrons to oscillate, generating radio waves
What happens when a conductor absorbs radio waves?
What happens when a conductor absorbs radio waves?
Induces alternating current (AC)
Frequency of induced AC compared to incoming waves
Frequency of induced AC compared to incoming waves
Same frequency
Main uses of radio waves
Main uses of radio waves
Communication: broadcasting, mobile phones, wireless networks
Can radio waves travel long distances?
Can radio waves travel long distances?
Yes, travel long distances
Can radio waves penetrate materials?
Can radio waves penetrate materials?
Yes, penetrate walls and buildings