Karteikarten
waves igcse physics
Karten in diesem Stapel (27)
- 1—
- 2what does the "frequency" of a wave measure?how many complete waves there are per second (passing a certain point)
- 3what unit is frequency measured in?hertz (Hz)
- 4what unit is wavelength measured in?lambda
- 5what is the formula for calculating the frequency
- 6formula triangle for calculating wave speed
- 7transverse wavesvibrations are at 90 degrees to the direction energy is transferred by the wave
- 8longitudinal wavesthe vibrations are along the same direction as the wave transfers energy
- 9all waves transfer ______ without transferring ______all waves transfer energy without transferring matter
- 10give examples of longitudinal waves (3)sound waves
ultrasound waves
shock waves - 11give examples of transverse waves (3)all electromagnetic waves
ripples on water
light waves - 12name all of the electromagnetic waves in orderradio waves, microwaves, infrared, visible light, ultraviolet, x-rays, gamma rays
- 13the frequency of a source moving towards you will seem ______ and its wavelength will seem _______the frequency of a source moving towards you will seem higher and its wavelength will seem shorter
- 14the frequency of a source moving away from you will seem _____ and its wavelength will seem ______the frequency of a source moving away from you will seem lower and its wavelength will seem longer
- 15wave speed is c_______wave speed is constant
- 16name all electromagnetic waves in orderradiowaves, microwaves, infra-red, visible light, ultra-violet, x-rays, gamma rays
- 17what properties are inverse to each other in electromagnetic waves (left to right)increasing frequency
decreasing wavelength - 18what is the doppler effectthe change of wavelength and frequency depending on how close or far the observer is (as opposed to how the wavelength is when stationary)
- 19all electromagnetic waves travel at the same _____ in a free spaceall electromagnetic waves travel at the same speed in a free space
- 20state what is meant by the doppler effect-the change in the observed frequency/wavelength of a wave
-due to the wave source moving towards or away from the observer - 21why does the doppler effect occur (1)wave speed is constant, so a moving source can catch up to the wavefronts of the waves produced in front of it
- 22why does the doppler effect occur (2)this causes wavefronts in front of the source to bunch up, so their frequency gets higher and their wavelength gets shorter
- 23why does the doppler effect occur (3)the wavefronts behind the source spread out, so their frequency gets lower and their wavelengths get longer
- 24name the different types of radio waves (2)? what are their wavelengths?-long-wave radio (1-10 km)
-short-wave radio (10m-100m) - 25how are long-wave radio signals transmittedthey can bend around the curved surface of the earth
- 26how are short-wave radio signals transmittedreflecting off of the ionosphere
- 27—
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- Karteikarten am waves igcse physics, erstellt von idk bro am 29/01/2022.
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- idk bro
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