Which of the following quantities of sound is affected by the change in air temperature?
Correct answer: D. Velocity
- A. Intensity
- B. Loudness
- C. Amplitude
- D. Velocity
Explanation
The correct answer is Velocity. The velocity of sound in air is affected by changes in air temperature because sound travels through the medium of air as a wave, and the speed of this wave is dependent on temperature. As the air temperature increases, the molecules in the air move faster, allowing sound waves to travel more quickly. In contrast, intensity, loudness, and amplitude are more related to the energy, perception, and strength of the sound wave, respectively, and are not directly affected by changes in air temperature.
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About Speed of Sound
The speed of sound depends on the properties of the medium, including its elasticity and density, and in gases it varies mainly with temperature. Questions connect speed with frequency and wavelength, compare sound in solids, liquids and gases, and distinguish the speed of propagation from the oscillating particles' motion.
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