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 7
A bell is ringing inside a jar. When the air is removed from the jar, the sound becomes faint and eventually stops. Why?
A person shouts across a canyon and hears an echo. What causes the echo?
A submarine uses sonar to detect objects underwater. If the speed of sound in seawater is 1500 m/s and the sonar pulse returns in 4 seconds, how far away is the object?
Describe what happens to the particles of a medium when a sound wave passes through it.
Describe what is meant by 'compression' and 'rarefaction' in a sound wave.
Does sound travel faster in warm air or cold air?
Explain why sound cannot travel through outer space.
Explain why sound is not heard immediately after a distant explosion, but light from the explosion is seen instantly.
Explain why you hear thunder after you see lightning during a storm.
If a sound wave has a high frequency, what can you say about its pitch?
If the speed of sound in water is about 1500 m/s, how much time will it take for sound to travel 3000 meters in water?
What happens to the speed of sound if the temperature of the air increases?
What is sound?
What is the main difference between sound waves and light waves in terms of propagation?
What is the main reason why sound travels faster in solids than in gases?
What is the name of the process by which sound bounces off a surface?
What is the term for the number of sound waves that pass a point in one second?
