Term
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Definition
| a disturbance that transfers energy from one point to another without physically transferring matter |
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Definition
| repeated movement of something, in any opposite directions e.g. back and forward |
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Definition
| when particles vibrate at in the same direction as the direction of movement of the energy |
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Term
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Definition
| when particles vibrate at right angle to the direction of movement of the energy |
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Term
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Definition
| transfer energy from vibrating object to the ear in longitudinal waves |
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Term
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Definition
| transfer energy to the eye in transverse waves |
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Term
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Definition
| most common shape of wave in nature |
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Term
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Definition
| top of a wave (also called crest) |
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Term
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Definition
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Term
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Definition
| the height of a wave, from the middle to the crest, |
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Term
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Definition
| the (horizontal) length of one wave, from one crest to the next crest, |
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Term
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Definition
| the symbol for wavelength |
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Term
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Definition
| how many waves pass a point in 1 second. |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| formula to calculate frequency |
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Term
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Definition
| how long it takes a wave to pass a point |
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Definition
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Definition
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Term
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Definition
| the effect of frequency on a sound |
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Term
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Definition
| the effect of amplitude on a sound |
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Term
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Definition
| the unit of volume / loudness of a sound |
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Term
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Definition
| the formula to calculate speed (velocity) |
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Term
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Definition
| the state of matter through which sound waves travel fastest |
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Term
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Definition
| the ability to tell how far away an object is by detecting the time it takes for an echo to be heard |
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Term
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Definition
| the approximate range of frequencies heard by humans |
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Term
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Definition
| sound below 20 Hz (inaudible to humans) |
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Term
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Definition
| sound above 20,000 Hz (inaudible to humans) |
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Term
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Definition
| one use of ultrasound in healthcare |
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Term
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Definition
| the effect of listening to sounds above 85dB |
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Term
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Definition
| the light going to the reflective surface |
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Term
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Definition
| the light returning from the reflective surface |
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Term
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Definition
| line that is at 90o to the reflective surface, and is where the angles of incidence and reflection are measured |
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Term
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Definition
| the angle of incidence is the same as the angle of reflection |
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Term
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Definition
| seen when the direction of the ray is changed and the path is the same. |
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Term
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Definition
| the changing of the speed of light waves when they move from one medium to another, can change the direction of light rays |
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Term
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Definition
| the angle the light is bent away from the normal when it travels from one medium to another |
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Term
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Definition
| type of lens that bends light into a point |
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Term
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Definition
| type of lens that bends light out |
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Term
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Definition
| point where light rays come together |
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Term
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Definition
| distance between centre of lens and focal point |
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Term
| red, orange, yellow, green, blue, indigo, violet |
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Definition
| The colours in the visible spectrum |
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Term
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Definition
| the three primary colours in physics |
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Term
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Definition
| the three secondary colours in physics |
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Term
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Definition
| produced when the three primary colours of light are mixed |
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Term
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Definition
| the range of waves that can travel through a vacuum (and solids, liquids and gases) |
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Term
| types of waves in the electromagnetic spectrum |
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Definition
| radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-rays, Gamma rays |
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