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Waves

Wavelengths (8th Grade Physics)

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Waves
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Waves Please use Microsoft Powerpoint, and only Microsoft Powerpoint 2013 or later. Thank you! ?#? TABLE OF CONTENTS Wavelength Crest Trough High Frequency vs. Low Frequency Transverse Wave Longitudinal Wave Reflection Refraction Diffraction Constructive Interference Destructive Interference Incident & Reflected Wave WAVELENGTH The wavelength of a wave is the the distance between two crests or two troughs. Table of Contents CREST The highest point the particles of a medium move away from their resting position is the crest of a transverse wave. Table of Contents TROUGH The trough of a transverse wave is the lowest point the particles of a wave?s medium move downward from their resting position. Table of Contents HIGH FREQUENCY VS. LOW FREQUENCY

Physics the doppler effect

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Chapter 4.5/A2 The Doppler Effect Thursday, January 24, 2013 6:20 PM ? Formulas & Theorems Covered Today: Frequency Formula Moving Source Toward: Fo= Fs/ 1- (vs /c) Away: Fo= Fs/ 1+ (vs /c) Moving Observer Toward: Fo= Fs* [1+ (vo /c)] Away: Fo= Fs* [1- (vo /c)] Wavelength Formula Moving Source ?o = ?s (1 - (vs/c)) Moving Observer Example Questions: Sound wave f= 300Hz is emitted towards approaching car (moving observer towards). Wave is reflected back f2= 315Hz (moving source towards). V of the car? ? ? v= 8.29 m/s ? A train with siren of 500Hz is moving at a constant speed of 8.0 m/s. What f does observer hear? ? Calculate the train f moving towards and away and that is the range of frequency that the observer will hear. ?

light mechanical model

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the amplitude of a wave is the wave's height from zero to the crest. the wavelength is the distance between the crests. the frequency is the number of wave cycles to pass a given point per unit of time. the SI unit of cycles per second is called hertz (Hz). the wavelength snf frequency of light are inversely proportionate to each other. the product of the frequency and wavength is always a constant (c), the speed of light.

AP Physics algebra/trig: Waves

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Waves

Wave Motion A wave is the motion of a disturbance. A medium is a physical environment through which a disturbance can travel. For example, water is the medium for ripple waves in a pond. Waves that require a medium through which to travel are called mechanical waves. Water waves and sound waves are mechanical waves. Electromagnetic waves such as visible light do not require a medium. *Note: Waves are energy moving through the medium. Wave Types A wave that consists of a single traveling pulse is called a pulse wave. Whenever the source of a wave?s motion is a periodic motion, such as the motion of your hand moving up and down repeatedly, a periodic wave is produced.
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