40 Questions
What is the minimum frequency of sound waves considered as ultrasound?
20 kHz
Which of the following animals can hear ultrasound?
Dogs
What is the primary purpose of ultrasonic cleaners?
Cleaning small objects
What is the frequency range used for material testing?
50-500 kHz
What is the primary application of ultrasound in medical imaging?
Visualizing internal organs
How does ultrasound imaging work?
By transmitting sound waves into the body
What is the therapeutic use of ultrasound in physical therapy?
To generate local heating in biological tissues
What happens when ultrasound waves encounter a boundary between different types of tissues?
Part of the wave is reflected back
What is the main reason why ultrasonic cleaners are effective for cleaning jewelry and other delicate items?
The energy released from the collapse of microscopic bubbles in the cleaning fluid.
What is the principle behind the welding of plastics using ultrasound?
The localized heat generated by the ultrasound waves melts the plastic.
In medical imaging, what happens to the ultrasound waves when they encounter a boundary between different tissues?
Part of the wave is reflected back, and the rest is transmitted through the tissue.
What is a therapeutic use of focused ultrasound in medical treatment?
Breaking up kidney stones
What is the main advantage of using ultrasound in material testing?
It is a non-invasive and non-destructive technique.
What is the frequency range used in ultrasonic welding of plastics?
15-40 kHz
Which of the following is NOT an industrial application of ultrasound?
Medical imaging
What is the primary mechanism by which ultrasound waves generate heat in biological tissues?
The absorption of the ultrasound energy by the tissue
What is the primary reason why ultrasound is used in various industrial and medical applications?
Its ability to produce high-frequency sounds
Which of the following is a common use of ultrasound in medical imaging?
Visualizing muscles and soft tissues
What is the primary mechanism by which ultrasound waves are used to clean jewelry and other delicate items?
The energy released from the collapse of microscopic bubbles
What is the frequency range used in ultrasound imaging?
Varies depending on the application
What is a common industrial application of ultrasound?
Material testing
What is the primary advantage of using ultrasound in medical imaging?
It is a non-invasive technique
What is the primary reason why ultrasound is used in certain medical therapies?
Its ability to generate localized heat
What is the primary mechanism by which ultrasound waves are used to weld plastics?
The high-frequency vibrations generated by the ultrasound waves
What is the primary reason why ultrasound is used in prenatal scans?
To visualize the development of the unborn baby
What is the frequency range used in ultrasonic cleaning?
20-40 kHz
Which of the following is a characteristic of ultrasound waves in medical imaging?
They are reflected back at boundaries between different tissues
What is the primary mechanism by which ultrasound waves generate heat in biological tissues?
Through high-frequency vibrations
What is a common application of ultrasound in industrial settings?
Cleaning of industrial parts
Why is ultrasound used in certain medical therapies?
Because it can generate heat in biological tissues
What is the primary reason why ultrasound is used in material testing?
To detect flaws in materials
What is the primary mechanism by which ultrasound waves are used to break up kidney stones?
Through focused ultrasound
What is the primary reason why ultrasound is used in various industrial and medical applications?
Due to its high-frequency properties
Which of the following industrial applications of ultrasound operates at frequencies between 20 and 40 kHz?
Cleaning
What is the primary mechanism by which ultrasound waves visualize muscles and internal organs in medical imaging?
Reflection of ultrasound waves at boundaries between different tissues
What is the therapeutic use of focused ultrasound in breaking up kidney stones?
Generating localized heat
What is the primary advantage of using ultrasound in material testing?
It is a non-invasive technique
What is the frequency range used in high-frequency ultrasound for welding plastics?
15-40 kHz
Which of the following is a characteristic of ultrasound waves used in medical imaging?
High-frequency properties
What is the primary mechanism by which ultrasound generates heat in biological tissues during physical therapy?
Through the absorption of ultrasound waves
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