Flashcards
The EM spectrum
Cards in this deck (17)
- 1What are microwaves used for?Satellite, communication and mobile phones
- 2Radio waves can't pass throughA watery atmosphere
- 3How is a signal transmitted from a tv so it works?The microwaves from the tv signal transmits waves through the atmosphere to the satellite receiver in space that orbits out earth and the satellite transmits the signal back to earth in a different direction which is then revived by a satellite dish.
- 4What are gamma rays used for?Used for sterilisation
- 5What are the dangers of gamma rays?Causes ionisation at high dosages ( can cause cancer)
- 6What is the order of the EM spectrum waves?-radio waves
-microwaves
-infrared
-visual light
-uv rays
-X-rays
-gamma rays - 7What properties do all EM spectrum waves have?Same speed in a vacuum
- 8What are radio waves used for?Communication and radios
- 9What are microwaves used for?Communication and microwave ovens
- 10What are infrared waves used for?Tv remotes
Cooking
Heat detectors - 11What are the dangers of microwavesCertain frequencies can cause things to burn and heat
- 12What are the dangers of infraredCan cause burning
- 13What is visible light used for?Used for seeing and in cameras
- 14What are the dangers of visible lightCan blind you (damage ur retina)
- 15What are ultraviolet waves used forSun beds
- 16What are the dangers of ultraviolet wavesSun burn
Skin cancer - 17What are X-rays used forX-rays
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- Year 11 Physics Flashcards on The EM spectrum , created by sophie kemsley on 12/03/2017.
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- sophie kemsley
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