A person moves away from a stationary sound source. Which phrase describes the sound perceived by the person?(1 point)
Responses
lower pitch and shorter wavelength
lower pitch and shorter wavelength
lower pitch and longer wavelength
lower pitch and longer wavelength
higher pitch and longer wavelength
higher pitch and longer wavelength
higher pitch and shorter wavelength
higher pitch and shorter wavelength
When a person moves away from a stationary sound source, the sound perceived by the person undergoes a specific change. To determine the phrase that describes this change, it is useful to consider two key factors: pitch and wavelength.
Pitch refers to the perceived frequency of a sound, while wavelength is the physical distance between two corresponding points on a sound wave. As the person moves away from the sound source, the distance between the person and the source increases. This affects both the pitch and wavelength of the sound.
When an object moves away from a sound source, the sound waves are stretched out, resulting in an increase in wavelength. As a result, the person perceives a lower pitch because the frequency of the sound waves decreases.
Therefore, the correct phrase that describes the sound perceived by the person moving away from a stationary sound source is "lower pitch and longer wavelength."