Wednesday may 4 waves lesson
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Transcript of Wednesday may 4 waves lesson
![Page 1: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/1.jpg)
Wave Properties& Interactions
Kim Lachler
Updated 2015
NCES: 6.P.1
![Page 2: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/2.jpg)
Wave Properties There are 4 properties of wave
Amplitude
Wavelength
Frequency
Wave speed
![Page 3: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/3.jpg)
Wave Properties Amplitude
The maximum distance that the particles of a wave vibrate from the rest position. An other words from the rest position to the crest oror
from the rest position to the trough.
![Page 4: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/4.jpg)
Wave Properties Amplitude
Shows the amount of energy there is in a wave.
The bigger the amplitude the more energy there is.
![Page 5: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/5.jpg)
Wave Properties Wavelength
The distance from any point on a wave to an identical point on the next wave.
Generally measured from crest to crest on a transverse wave and from compression to compression on a longitudinal wave.
![Page 6: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/6.jpg)
Wave Properties Wavelength
The shorter the wavelength the more energy there is.
![Page 7: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/7.jpg)
Wave Properties Frequency
The number of waves produced in a given amount of time
Measured in Hertz (Hz)
1Hz=1/s (1 wave per second)
![Page 8: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/8.jpg)
Wave Properties Frequency
The higher the frequency the more energy
![Page 9: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/9.jpg)
Wave Properties Wave Speed
The speed at which a wave travels V= λ x f v – wave speed
λ – wavelength f – frequency
The wavelength and frequency of a wave in a certain medium depends on the wave speed not the other way around http://micro.magnet.fsu.edu/primer/java/wavebasics/index.html
![Page 10: Wednesday may 4 waves lesson](https://reader035.fdocuments.us/reader035/viewer/2022062903/589bf0861a28ab40348b52d5/html5/thumbnails/10.jpg)
Wave Interactions There are 4 types of wave interactions
Reflection
Refraction
Diffraction
Interference
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Wave Interactions Reflection
The bouncing back of a wave when it hits a surface.
* NOTE: When waves hits a substance some of it is transmitted and some of it is reflected.
Transmitted means to pass through
This is why we can see objects and hear echoes.
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Wave Interactions Refraction
The bending of waves as they pass through different mediums that cause the speed of the wave to change.
Prism
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Wave Interactions Diffraction
Change of direction of a wave when it hits an obstacle or edge.
Sound diffracts well around corners
Light does not diffract as much because their wavelengths are shorter
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Wave Interactions Interference
When 2 or more waves combine
Two objects can’t occupy the same space at the same time, but waves can.
There are 4 types of interference Constructive interference Destructive interference Standing waves Resonance