Fysik/Kemi - Alinea - Øre, lyd & bølger

Presentation

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Physics

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8th Grade

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Practice Problem

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Hard

Thomas Pilgaard

FREE Resource

3 Slides • 2 Questions

Lydbølger
Lydstyrke
Frekvens

Øre, lyd & toner

En svingning er fra startposition til startposition.

En svingning er altså frem OG tilbage.

Multiple Choice

Antal svingninger per sekund

Periode

Frekvens

Amplitude

Hyppighed

Multiple Choice

Antallet af svingninger strengen udfører hvert sekund

Amplituden

Hyppigheden

Frekvensen

Bølgelængden

Frekvensen måler antal svingninger per sekund

Frekvens forkortes "f".

Et lommeur kan ikke lave en hel svingning på 1 sekund. Det giver en frekvens på fx. 0,25.

En højtalermembran kan svinge mange gange på 1 sekund.
Den kan have frekvenser fra 20 Hz til 20.000 Hz.

Hertz (Hz) = per sekund

Lydbølger
Lydstyrke
Frekvens

Øre, lyd & toner

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