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 8
Describe how elasticity of a medium affects the speed of sound.
Describe how the density of a medium affects the speed of sound.
Describe what happens to the speed of sound as altitude increases in the atmosphere.
Describe what would happen to the speed of sound if the air became much denser but the temperature stayed the same.
Explain why sound cannot travel through outer space.
Explain why sound travels faster in solids than in gases.
A person shouts across a canyon and hears the echo 4 seconds later. If the speed of sound is 340 m/s, how far away is the canyon wall?
A thunderstorm is 1,715 meters away. If the speed of sound is 343 m/s, how many seconds after you see the lightning will you hear the thunder?
Sound travels fastest in which of the following? (1) Air (2) Water (3) Steel (4) Vacuum
The speed of sound depends on which of the following properties of the medium? (1) Temperature (2) Density (3) Elasticity (4) All of the above
Which of the following best describes the relationship between temperature and the speed of sound in air? (1) As temperature increases, speed decreases. (2) As temperature increases, speed increases. (3) Temperature has no effect.
Which of the following best explains why you see lightning before you hear thunder? (1) Light travels faster than sound. (2) Sound travels faster than light. (3) They travel at the same speed.
Fill in the blank: Sound needs a _______ to travel.
Fill in the blank: The formula for speed is speed = _______ / time.
Fill in the blank: The speed of sound in a medium is calculated by dividing distance by _______.
Fill in the blank: The speed of sound in air at 0°C is about _______ m/s.
True or False: Sound can travel through a vacuum.
True or False: Sound travels at the same speed in all liquids.
True or False: Sound travels faster in humid air than in dry air.
True or False: The speed of sound in air is always 343 m/s, regardless of conditions.
