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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. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
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?
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?
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.
Explain why sound is louder when you put your ear to a railway track than when you listen through the air.
Explain why sound travels faster on a hot day than on a cold day.
Explain why you hear thunder after you see lightning during a storm.
If a sound wave has a frequency of 500 Hz and travels at 340 m/s, what is its wavelength? (Use the formula: wavelength = speed / frequency)
If the speed of sound in a medium is 400 m/s and the wavelength is 2 m, what is the frequency?
If the temperature of air increases, what happens to the speed of sound?
What happens to the wavelength of a sound wave if its frequency increases but the speed remains the same?
What is sound propagation?
What is the main function of the medium in sound propagation?
What is the main reason sound travels faster in solids than in gases?
What is the unit of frequency for sound waves?
When you hear an echo, what is happening to the sound wave?
A sound wave travels 1,700 meters in 5 seconds through a certain medium. What is the speed of sound in that medium?
A sound wave travels through three different materials: wood, water, and air. Arrange these materials in order from fastest to slowest for sound propagation and explain why.