wednesday may 4 waves lesson

Wave Properties& Interactions

Kim Lachler

Updated 2015

NCES: 6.P.1

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Wave Properties There are 4 properties of wave

Amplitude

Wavelength

Frequency

Wave speed

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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.

Wave Properties Amplitude

Shows the amount of energy there is in a wave.

The bigger the amplitude the more energy there is.

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.

Wave Properties Wavelength

The shorter the wavelength the more energy there is.

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)

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Wave Properties Frequency

The higher the frequency the more energy

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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

http://micro.magnet.fsu.edu/primer/java/wavebasics/index.html

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

wednesday may 4 waves lesson

Science