Max Lee
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Transverse waves oscillation and example
Oscillates perpendicular to the energy transfer and ripple in water
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Longitudinal waves oscillation and example
Oscillates parallel to the energy transfer and sound waves travelling through air
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Amplitude
The furthest point the wave vibrates from the undisturbed position
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Wavelength
A point on one wave to the equivalent point on another wave
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Frequency
The number of waves passing through a point each second
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Ripple tank PRACTICAL
Vibrating bar creates waves on the surface of the ripple tank, a lamp shines lights through water creating an image on the paper. Record the waves with a phone and measure the distance between waves (wavelength). count num of waves passing a point in 10 seconds then divide by 10 (frequency)
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Radio waves have ___ wavelength and ____ frequency
long and low
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Electromagnetic waves
Transverse waves that transfer energy from the source of the waves to the absorber
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speed of electromagnetic waves (like light)
3 x 10^8
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Hazards of UV
Increase risk of skin cancer
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Hazards of X and gamma rays
Increase risk of cancer
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Radio wave use
Transmit radio signals
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Microwave use
Microwaving food
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Infared use
Cooking food in ovens
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Visible light use
Communication through fibre optics
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UV use
Sun tanning
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X ray and gamma use
Medical imagery
