5856908
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace alrededor de 8 años
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Pregunta 1
Pregunta
When an automobile moves towards a listener, the sound of its horn seems relatively __________. Click on the choice(s) below that correctly complete this statement.
Respuesta
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low pitched
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high pitched
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normal
Pregunta 2
Pregunta
Click on each statement about the Doppler Effect that is TRUE.
Respuesta
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A. It occurs when a wave source moves towards an observer.
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B. It occurs when an observer moves towards a wave source.
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C. It occurs when a wave source moves away from an observer.
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D. It occurs when an observer moves away from a wave source.
Pregunta 3
Pregunta
Two ambulances have their sirens on and emit sound of the SAME frequency. Both ambulances are the same distance away from an observer but approach the observer from different directions and at different speeds. The ambulance with [blank_start]higher[blank_end] speed will be heard by the observer to have the lower pitched sound.
Respuesta
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higher
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lower
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