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Chapter  15.1  –  Types of Waves Chapter  15.1  –  Types of Waves

Chapter 15.1 – Types of Waves - PowerPoint Presentation

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Uploaded On 2018-03-14

Chapter 15.1 – Types of Waves - PPT Presentation

wave disturbance that carries energy through matter or space medium matter through which a wave travels the physical environment in which phenomena occur mechanical wave wave that requires a medium through which to travel ID: 651158

waves wave types energy wave waves energy types chapter particles medium spring motion moves vibrating mass longitudinal elastic potential direction move transverse

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Slide1

Chapter 15.1 – Types of Waves

wave –

disturbance that carries energy through matter or space

medium –

matter through which a wave travels

the physical environment in which phenomena occur

mechanical wave –

wave that requires a medium through which to travel

ex. Slide2

Chapter 15.1 – Types of Waves

electromagnetic wave –

wave made of changing electric and magnetic fields in space

do not require a medium

ex.

the bigger a wave is, the more energy it carries

waves spread out in circles called wave fronts

as the wave spreads out the energy is spread out tooSlide3

Chapter 15.1 – Types of Waves

most waves are caused by vibrating objects

the energy of a mass vibrating on a spring changes form

pull down to gain elastic potential energy

as it moves up the elastic potential energy converts to kinetic energy

at its maximum compression the spring has elastic and gravitational potential energy

as the spring moves down it converts the energy to kinetic energySlide4

Chapter 15.1 – Types of Waves

a mass vibrating through its rest position is called simple harmonic motion

damped harmonic motion –

vibration that fades as energy is transferred from one object to another

- particles vibrate like a mass on a springSlide5

Chapter 15.1 – Types of Waves

transverse wave –

wave in which the particles of the medium move perpendicularly to the direction the wave is traveling

wave moves to the right, the particles vibrate up and down

ex. electromagnetic waves

, seismic waves

longitudinal wave –

wave in which the particles of a medium vibrate parallel to the direction of wave motion

the wave compresses and expands the medium

ex. sound waves, spring wavesSlide6

Chapter 15.1 – Types of Waves

crest –

highest point of a transverse wave

trough –

lowest point of a transverse wave

compression –

compressed area of a longitudinal wave

rarefaction –

stretched out area of a longitudinal waveSlide7

Chapter 15.1 – Types of Waves

surface wave –

wave in which the particles move both perpendicular and parallel to the direction of wave motion

particles move in an ellipse or circle

surface waves only occur at the boundary of two mediums

ex. water waves between air

and water