Chapter 2 Waves A wave is a disturbance that travels through matter or space. Matter or space is called a medium which includes such things as air and.

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Presentation transcript:

Chapter 2 Waves A wave is a disturbance that travels through matter or space. Matter or space is called a medium which includes such things as air and water. Once the wave is created, ENERGY Will travel through the medium.

2 Types of Waves Longitudinal Wave : Does require a medium in order to travel. Ex. Sound Transverse Wave : Does not require a medium in order to travel. Ex. Light

What determines the speed of sound ? The density of the material or medium The more dense the medium, the faster sound will travel

Parts of a Wave Crest : the highest part of a wave Trough : the lowest part of a wave Wavelength : the distance from crest to crest Wave height : The distance from trough to crest Amplitude : the distance from the rest position to the crest

Frequency : the number of waves that pass a given point per second. What is the relationship between the wavelength and frequency ?

Equations Speed = wavelength x frequency Frequency = speed / wavelength Wavelength = speed / frequency Frequency = 1 / time

UNITS Speed: meters / second Wavelength: meters Frequency: Hertz Time: seconds

Electromagnetic Waves All electromagnetic waves travel …….. Like a transverse wave At the speed of Light ( 3.0 x 10^8 m/sec. )

Types of Electromagnetic Waves Radio Wave Microwave Infrared Visible Light Ultraviolet X ray Gamma Ray

* Pictures obtained from Google Images