Radio Waves (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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12 cards from this deck
Radio waves: wavelength in EM spectrum
Radio waves: wavelength in EM spectrum
Longest wavelength
Radio waves: frequency in EM spectrum
Radio waves: frequency in EM spectrum
Lowest frequency
How are radio waves generated?
How are radio waves generated?
By oscillations in electrical circuits
What current generates radio waves in antenna?
What current generates radio waves in antenna?
Alternating current (AC)
What do oscillating electrons in antenna produce?
What do oscillating electrons in antenna produce?
Radio waves
What do radio waves induce when absorbed by conductor?
What do radio waves induce when absorbed by conductor?
Alternating current (AC)
Frequency of induced AC vs incoming radio waves
Frequency of induced AC vs incoming radio waves
Same frequency
Main use of radio waves
Main use of radio waves
Communication technologies
Examples of radio wave communication uses
Examples of radio wave communication uses
Broadcasting, mobile phones, wireless networks
Radio waves: distance capability
Radio waves: distance capability
Can travel long distances
What materials can radio waves penetrate?
What materials can radio waves penetrate?
Walls and buildings
What can radio waves travel through?
What can radio waves travel through?
Air and other mediums