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Libsy Inglês 9 flashcards

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1Whats the Doppler effect?When a source moves towards an observer, the observed wavelength decreases and the frequency increases.
When a source moves away from an observer, the observed wavelength increases and the frequency decreases. There is a change in frequency and wavelength.
2What kind of wave is sound?Longitudinal
3What can sound waves travel through?Water, Air and wood.
4WavelengthThe distance between the crest of the wave.
5FequencyHow many times something occurs
6AmplitudeThe amplitude of a wave is its maximum disturbance from its un disturbance position.
7Wave speedHow fast or slow the wave is going.
8longitudinalThe vibrations are along the same diction as they travel. Travels through liquids.
9Transverselight and other types of electromagnetic radiation are transverse waves. Vibrations are at right angles.