Flashcards
waves
Cards in this deck (25)
- 1amplitudeThe size of wave oscillation (for mechanical waves its how far the particles vibrate from their original position)
- 2Wavelengththe distance between two troughs of peaks
- 3Frequencythe number of peak/troughs that pass a point per seconds (in seconds)
- 4Speedhow far a wave travels in a second
- 5longitudinal wavesparticles move parallel to the direction of the waves (sound waves)
- 6compression/rarefractionparticles are squashed/more spread out
- 7Transversevibrations are at rights angles to the direction of the waves
- 8angle of reflectionangle between the waves being reflected and the normal
- 9angle of incidencethe angle of the waves hitting the surface and the normal
- 10refractionwhen waves enters a new medium and changes direction (because of the refractive index) if it enters at a angle
- 11diffractionwhen a wave passes through a gap of edge and changes shape
- 12speed =speed = freq x wavelength
- 13time periodtime period= 1/frequency
- 143 things that happens to light when it changes meidium-slows down/speeds up
-wave length increases/decreases
-angle changes - 15refractive index (gives you the speed at which the wave is traveling)speed of light in air/speed of light in medium sinI/sinR=n
- 16What is the electromagnetic spectrumis a type or family of waves, in a vacuum (all can travel through a vaccume e.g: the sun) they all travel at 300,000,000 m/s
- 17white lightred, orange, yellow, green, blue, indigo, violet
- 18which has a longer wavelength red or violet?Red,
- 19why when refracted at an angle does white light separate into the visible spectrum?while they are all being refracted they all slow down it is by different amounts as a result of all the waves having different wavelengths. the colors are therefore refracted at different angles
- 20variation of wave lengths in the electromagnetic spectrum10^4 to 10^-12, visible light is 10^-6 to 10^-7
- 21do all electromagnetic waves travel at the same speed in a vacuum?yes
- 22what is different about all waves of the electromagnetic spectrumwave length (as you go up-towards red-the wavelength increase) and frequency (As you go towards violet the frequency increases) longest wave lengths have the lowest frequencies
- 23three examples of long wave lengths in size orderlong radio waves, microwaves, infrared
- 24three examples of short wave lengths (in size order, biggest to smallestultra violet, x-rays, gamma rays
- 25—
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- IGCSE edexel Physics Flashcards on waves, created by khtsmith09 on 05/11/2015.
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- khtsmith09
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