Speed of Sound
Physics ⇒ Waves and Sound
Speed of Sound starts at 8 and continues till grade 12.
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See sample questions for grade 12
Describe how the speed of sound in air changes with altitude.
Describe the effect of humidity on the speed of sound in air.
Explain why sound cannot travel through a vacuum.
Explain why the speed of sound increases with temperature in air.
Explain why the speed of sound is different in hydrogen and oxygen at the same temperature and pressure.
A sound wave takes 0.5 seconds to travel from one end of a 170 m long tunnel to the other. What is the speed of sound in the tunnel?
A sound wave travels through a metal rod at 5100 m/s. If the rod is 2.04 m long, how long does it take for the sound to travel from one end to the other?
A thunderstorm is observed. The time between seeing the lightning and hearing the thunder is 6 seconds. If the speed of sound in air is 340 m/s, how far away is the storm?
The speed of sound in a medium depends on which property of the medium?
(1) Density
(2) Elasticity
(3) Both density and elasticity
(4) None of the above
Which of the following best explains why sound travels faster in water than in air?
(1) Water is denser than air
(2) Water molecules are more elastic than air molecules
(3) Water has a higher temperature than air
(4) Water is a better conductor of heat than air
Which of the following correctly lists the speed of sound in increasing order for the given media?
(1) Air, Water, Steel
(2) Water, Air, Steel
(3) Steel, Water, Air
(4) Air, Steel, Water
Which of the following factors does NOT affect the speed of sound in air?
(1) Temperature
(2) Pressure
(3) Humidity
(4) Frequency of the sound wave
Fill in the blank: The speed of sound in a vacuum is ______.
Fill in the blank: The speed of sound in air at 25 °C is approximately ______ m/s.
Fill in the blank: The speed of sound in air is approximately ______ times slower than the speed of light in air.
The speed of sound in air at 0 °C is approximately ______ m/s.
True or False: Sound travels faster in solids than in gases.
True or False: The speed of sound in a gas is directly proportional to the square root of its absolute temperature.
True or False: The speed of sound in air increases as the pressure increases, provided temperature remains constant.
True or False: The speed of sound is higher in humid air than in dry air.
