Sound Propagation
Physics ⇒ Waves and Sound
Sound Propagation starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Sound Propagation.
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See sample questions for grade 8
A bell is rung inside a jar from which air is slowly removed. What happens to the sound as the air is removed?
Describe what happens to the particles of a medium when a sound wave passes through it.
Describe what happens to the speed of sound as it moves from air into water.
Explain why sound cannot travel through outer space.
A bell is rung inside a jar from which air is slowly removed. What happens to the sound as the air is removed?
A person shouts across a canyon and hears an echo 2 seconds later. If the speed of sound is 340 m/s, how wide is the canyon?
A submarine uses sonar to detect objects underwater. If the sonar pulse returns after 4 seconds and the speed of sound in water is 1500 m/s, how far away is the object?
Explain why sound is louder when you put your ear to a railway track than when you listen through the air.
Sound travels fastest in which of the following media?
(1) Air
(2) Water
(3) Vacuum
(4) Steel
Which of the following best describes a longitudinal wave?
(1) The particles move perpendicular to the direction of the wave
(2) The particles move parallel to the direction of the wave
(3) The particles do not move at all
(4) The wave does not need a medium
Which of the following best describes the direction of particle vibration in a sound wave?
(1) Perpendicular to the direction of wave travel
(2) Parallel to the direction of wave travel
(3) Random
(4) Circular
Which of the following best explains why sound is not heard instantly after a distant explosion?
(1) Sound travels slowly compared to light
(2) Sound is absorbed by the air
(3) Sound cannot travel through air
(4) Sound travels faster than light
Fill in the blank: Sound is a type of ______ wave.
Fill in the blank: The ______ of a sound wave determines its pitch.
Fill in the blank: The ______ of a sound wave is the maximum displacement of particles from their rest position.
Fill in the blank: The region where particles are close together in a sound wave is called ______.
True or False: All sounds travel at the same speed in a given medium.
True or False: Sound can travel through a vacuum.
True or False: Sound waves can be reflected, refracted, and absorbed.
True or False: Sound waves transfer matter from one place to another.
