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25 Cards in this Set
- Front
- Back
- 3rd side (hint)
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wavelength
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distance from one peak of the wave to the next peak. wavelength is a distance measured in meters
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amplitude
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the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path.
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equation for speed
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speed or (v)= frequency(Hz) ● wavelength
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equation for frequency
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Hz= # of cycles/ time (sec)
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sound
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●needs matter to make sound
●sound waves are longitudinal ●caused by particles putting pressure on each other |
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frequency (Hz)
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●pressure of a sound whether u can hear it or not
●rare of vibrations ●20hz to 20,000 Hz is what u can hear ●determines pitch |
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virtual image
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in places where light doesn't reach
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mirror
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real image
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light passes through the actual location
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a picture projected on to the board using the light from the projector
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laterally inverted
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sides are switched
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When you're looking in the mirror. everything is switched. left is right and everything on the right is to the left.
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electromagnetic spectrum waves
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travel at the same speed in a vacuum
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types of electromagnetic waves
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●radio; microwaves; infra-red; visible light; ultraviolet; x-rays; gamma rays
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long wavelength =.....
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low frequency , starts at Radio
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short wavelength =....
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High frequency
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What is it?
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the electromagnetic spectrum
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how is light perceived?
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●in eyes,in retina using rods and cones
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reflection
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change in direction of light
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light spectrum
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Law of reflection
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ray of incidence
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ray coming into mirror
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reflected ray
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ray coming out of mirror
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ray diagram
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refraction
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When light bends
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greater refractive index...=
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more bent ray
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critical angle
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●depends on material
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When does internal reflection occur?
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When angle of incidence is greater than critical angle
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fiber optic cable (effective ex. of total internal reflection)
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