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
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.
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?
Fill in the blank: The time taken for an echo to return is 2 seconds. If the speed of sound in air is 340 m/s, the distance to the reflecting surface is __________ meters.
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.
Which device uses sound waves to create images of internal organs in the human body? (1) X-ray machine (2) Ultrasound scanner (3) MRI scanner (4) Thermometer
Which of the following is a medical application of sound waves? (1) X-ray imaging (2) Ultrasound scanning (3) CT scanning (4) MRI scanning
Which of the following is a use of the reflection of sound? (1) Cooking (2) Echo location (3) Photosynthesis (4) Magnetism
Which of the following is an example of echolocation? (1) A person talking on the phone (2) A dolphin finding fish (3) A radio playing music (4) A bell ringing
Fill in the blank: Animals like dolphins and bats use __________ to locate objects and prey.
Fill in the blank: The change in frequency of a sound wave due to the motion of the source or observer is called the __________ effect.
Fill in the blank: The device that converts sound energy into electrical energy is called a __________.
Fill in the blank: The frequency of ultrasound is __________ than the upper limit of human hearing.
True or False: Sonar is used by ships to measure the depth of the sea.
True or False: Sound waves can be used to break up gallstones in the body.
True or False: Sound waves can be used to detect cracks in metal structures.
True or False: Sound waves can be used to measure the thickness of materials.
