Speed of Sound in Different Media at Increasing Temperatures
Temperature (°C) 0 10 20 30
Speed of sound in freshwater (m/s) 1,403 1,447 1,481 1,507
Speed of sound in seawater (m/s) 1,449 1,490 1,522 1,546
Speed of sound in air (m/s) 331 337 343 355
Why does sound travel the slowest in air?
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Responses
The kinetic energy of the molecules of air is too low to transport sound waves.
The kinetic energy of the molecules of air is too low to transport sound waves.
The temperature of air varies more than the temperature of water.
The temperature of air varies more than the temperature of water.
The distance between molecules of air is greater than for molecules of water.
The distance between molecules of air is greater than for molecules of water.
The wind blocks the sound waves and carries them in all directions.
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The correct response is:
The distance between molecules of air is greater than for molecules of water.
This is because sound travels through the vibration of molecules. In air, the molecules are further apart compared to those in liquids (like freshwater and seawater). This greater distance results in less efficient transfer of sound energy, causing sound to travel more slowly in air.
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