A wave is any disturbance that transmits energy through matter or empty space Energy can be carried away from its source by a wave As a wave travels it does work on everything in its path ID: 795837
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Slide1
Energy Transfer - Waves
Slide2Waves
A wave is any disturbance that transmits energy through matter or empty space.
Energy can be carried away from it’s source by a wave. As a wave travels, it does work on everything in it’s path
Ex. Wave in water – does work to make water move up and down, to make boats move up and down with the water
Slide3Mediums
Energy can be transferred with or without a medium
A medium is a substance through which a wave can travel.
Medium can be solid, liquid, or gas
In a medium, when one particle vibrates, it passes energy to the particle next to it, which causes the second particle to vibrate.
Waves that require a medium to travel – Mechanical Waves
Sound waves
Ocean waves
Slide4Energy transfer without a medium
Some waves can transfer energy without going through a medium – Called Electromagnetic Waves
Visible light
Microwaves
Radio waves
Xrays
Although they don’t require a medium, they can travel through matter (air, water, glass,
etc
)
Slide5Types of Waves
Waves are classified based on the direction in which the particles of the medium vibrate compared with the direction in which the waves move.
3 types of waves
Transverse
Longitudinal
Surface
Slide6Transverse waves
Waves in which the particles of the medium move up-and-down
The particles of the medium move perpendicularly to the direction the wave is traveling
The word Transverse means “moving across”
Slide7Longitudinal Wave
The particles of the medium vibrate parallel to the direction of wave motion – Ex: Sound wave
Slide8Surface Wave
When waves form at or near the boundary between two media, a transverse wave and a longitudinal wave can combine to form a Surface Wave
Look like transverse waves, but the particles of the medium move in circles rather than up and down. They move forward at the crest and backward at the trough
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