12 Questions
What type of waves does an ultrasound scanner use?
Ultrasonic waves
How is sound produced according to the text?
Due to the vibration of different objects
What property of sound determines its pitch?
Frequency
In sound propagation, what actually travels through the medium?
Energy of the sound
What is the primary application of ultrasound mentioned in the text?
Detecting cracks and flaws in metal blocks
Why can't ordinary sound waves be used to detect cracks and flaws in metal blocks?
They bend around corners and may not reflect back
What type of frequencies are associated with infrasound?
Low frequencies
How are ultrasonic waves able to travel even in the presence of obstacles?
By traveling along well-defined paths
How does the doctor detect abnormalities like stones in the gall bladder using echocardiography?
By allowing ultrasonic waves to travel through the tissues of the body
How are cracks or holes inside metal blocks detected using ultrasonic waves?
The ultrasound gets reflected back if there is a defect in the metal block
How does a hearing aid help people with hearing loss?
By converting sound waves to electrical signals using a microphone
How do ultrasound scanners work to produce images of internal organs?
By using ultrasonic waves that are reflected back from regions with tissue density changes
Learn about how ultrasound scanners use ultrasonic waves to create images of internal organs, helping doctors detect abnormalities such as stones or tumors. Explore the technique of ultrasonic waves traveling through body tissues and getting reflected from regions with different tissue densities.
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