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Makayla Peterson

Chapter Reveiw 15, 16, 17, 18
by

Mike Hinton

on 14 November 2012

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Transcript of Makayla Peterson

Chapter 15 A medium is any substance that a wave moves through.

Some more wave words are...........Crest,Trough, Amplitude
,Wavelength, frequency, refraction, Chapter 17 Chapter 18 Chapeter Review
By :Makayla Chapter 16 Frequency determines pitch.
An electromagnetic wave is a disturbance that transfers energy through a field. Mirrors form images by reflecting light. A wave is a disturbance that tranfers energy from one place to another. Waves that transfer energy through through matter are aslo known a mechanical waves. Hertz is one complete wave, or cycle per second. The highest frequency that humans can hear is 20,000 hertz. Intensity determines loudness The study of sound is called acoustics. Sound has many uses Electromagnetic waves can travel in a vaccum. The range of all EM frequencies is know as the electromagnetic spectrum or EM spectrum Infarred, visible and ultraviolet light have mid-range wavelegnths and frequencies Optics An image is a picture of an object formed by waves of light Lenses form images by refracting light. Shape determines how form images The eye is a natural tool
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