Applications of Sound Waves
Physics ⇒ Waves and Sound
Applications of Sound Waves starts at 9 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Applications of Sound Waves.
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See sample questions for grade 9
A ship sends a sonar pulse to the ocean floor and receives the echo after 4 seconds. If the speed of sound in water is 1500 m/s, what is the depth of the ocean at that point?
Describe how a stethoscope uses sound waves to help doctors.
Describe how sound waves are used in fish finders.
Describe how sound waves are used in musical instruments.
Describe one industrial use of ultrasound.
Describe one way in which sound waves are used in communication technology.
Explain how bats use sound waves to navigate and find food.
Explain how sonar works to measure the depth of the ocean.
Explain how the Doppler effect is used in medical imaging.
Explain why sound cannot be heard in space.
Explain why ultrasound is preferred over X-rays for imaging unborn babies.
A bat emits a sound pulse and detects the echo after 0.02 seconds. If the speed of sound in air is 340 m/s, how far away is the object reflecting the sound?
A medical technician uses ultrasound to measure the distance to a tumor inside the body. The ultrasound pulse takes 0.0004 seconds to travel to the tumor and back. If the speed of sound in body tissue is 1540 m/s, calculate the distance from the skin to the tumor.
Describe how the reflection and absorption of sound waves are important in the design of concert halls and auditoriums.
Explain how the principle of resonance is used in tuning musical instruments to a specific pitch.
Explain why soundproofing materials are often soft and porous rather than hard and smooth.
A doctor uses a Doppler ultrasound to measure the speed of blood flow in a patient's artery. If the frequency of the reflected sound increases, what does this indicate about the direction of blood flow relative to the probe?
A submarine is located 1,200 meters below the surface of the ocean. If the speed of sound in seawater is 1,500 m/s, how long will it take for a sonar pulse sent from the submarine to reach the ocean surface and return as an echo?
Describe one way in which the absorption of sound waves is important in the design of open-plan offices.
Explain how the principle of interference of sound waves is used in noise-cancelling headphones.
