Gr 10 Physical Sciences Ch 8: Ultrasound

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What is the minimum frequency of sound waves considered as ultrasound?

15 kHz

30 kHz

20 kHz (correct)

10 kHz

Which of the following animals can hear ultrasound?

Humans

Dogs (correct)

Lions

Elephants

What is the primary purpose of ultrasonic cleaners?

Cleaning small objects (correct)

Welding of plastics

Medical imaging

Material testing

What is the frequency range used for material testing?

50-500 kHz Signup and view all the answers

What is the primary application of ultrasound in medical imaging?

Visualizing internal organs Signup and view all the answers

How does ultrasound imaging work?

By transmitting sound waves into the body Signup and view all the answers

What is the therapeutic use of ultrasound in physical therapy?

To generate local heating in biological tissues Signup and view all the answers

What happens when ultrasound waves encounter a boundary between different types of tissues?

Part of the wave is reflected back Signup and view all the answers

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. Signup and view all the answers

What is the principle behind the welding of plastics using ultrasound?

The localized heat generated by the ultrasound waves melts the plastic. Signup and view all the answers

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. Signup and view all the answers

What is a therapeutic use of focused ultrasound in medical treatment?

Breaking up kidney stones Signup and view all the answers

What is the main advantage of using ultrasound in material testing?

It is a non-invasive and non-destructive technique. Signup and view all the answers

What is the frequency range used in ultrasonic welding of plastics?

15-40 kHz Signup and view all the answers

Which of the following is NOT an industrial application of ultrasound?

Medical imaging Signup and view all the answers

What is the primary mechanism by which ultrasound waves generate heat in biological tissues?

The absorption of the ultrasound energy by the tissue Signup and view all the answers

What is the primary reason why ultrasound is used in various industrial and medical applications?

Its ability to produce high-frequency sounds Signup and view all the answers

Which of the following is a common use of ultrasound in medical imaging?

Visualizing muscles and soft tissues Signup and view all the answers

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 Signup and view all the answers

What is the frequency range used in ultrasound imaging?

Varies depending on the application Signup and view all the answers

What is a common industrial application of ultrasound?

Material testing Signup and view all the answers

What is the primary advantage of using ultrasound in medical imaging?

It is a non-invasive technique Signup and view all the answers

What is the primary reason why ultrasound is used in certain medical therapies?

Its ability to generate localized heat Signup and view all the answers

What is the primary mechanism by which ultrasound waves are used to weld plastics?

The high-frequency vibrations generated by the ultrasound waves Signup and view all the answers

What is the primary reason why ultrasound is used in prenatal scans?

To visualize the development of the unborn baby Signup and view all the answers

What is the frequency range used in ultrasonic cleaning?

20-40 kHz Signup and view all the answers

Which of the following is a characteristic of ultrasound waves in medical imaging?

They are reflected back at boundaries between different tissues Signup and view all the answers

What is the primary mechanism by which ultrasound waves generate heat in biological tissues?

Through high-frequency vibrations Signup and view all the answers

What is a common application of ultrasound in industrial settings?

Cleaning of industrial parts Signup and view all the answers

Why is ultrasound used in certain medical therapies?

Because it can generate heat in biological tissues Signup and view all the answers

What is the primary reason why ultrasound is used in material testing?

To detect flaws in materials Signup and view all the answers

What is the primary mechanism by which ultrasound waves are used to break up kidney stones?

Through focused ultrasound Signup and view all the answers

What is the primary reason why ultrasound is used in various industrial and medical applications?

Due to its high-frequency properties Signup and view all the answers

Which of the following industrial applications of ultrasound operates at frequencies between 20 and 40 kHz?

Cleaning Signup and view all the answers

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 Signup and view all the answers

What is the therapeutic use of focused ultrasound in breaking up kidney stones?

Generating localized heat Signup and view all the answers

What is the primary advantage of using ultrasound in material testing?

It is a non-invasive technique Signup and view all the answers

What is the frequency range used in high-frequency ultrasound for welding plastics?

15-40 kHz Signup and view all the answers

Which of the following is a characteristic of ultrasound waves used in medical imaging?

High-frequency properties Signup and view all the answers

What is the primary mechanism by which ultrasound generates heat in biological tissues during physical therapy?

Through the absorption of ultrasound waves Signup and view all the answers

Gr 10 Physical Sciences Ch 8: Ultrasound

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Questions and Answers

What is the minimum frequency of sound waves considered as ultrasound?

Which of the following animals can hear ultrasound?

What is the primary purpose of ultrasonic cleaners?

What is the frequency range used for material testing?

What is the primary application of ultrasound in medical imaging?

How does ultrasound imaging work?

What is the therapeutic use of ultrasound in physical therapy?

What happens when ultrasound waves encounter a boundary between different types of tissues?

What is the main reason why ultrasonic cleaners are effective for cleaning jewelry and other delicate items?

What is the principle behind the welding of plastics using ultrasound?

In medical imaging, what happens to the ultrasound waves when they encounter a boundary between different tissues?

What is a therapeutic use of focused ultrasound in medical treatment?

What is the main advantage of using ultrasound in material testing?

What is the frequency range used in ultrasonic welding of plastics?

Which of the following is NOT an industrial application of ultrasound?

What is the primary mechanism by which ultrasound waves generate heat in biological tissues?

What is the primary reason why ultrasound is used in various industrial and medical applications?

Which of the following is a common use of ultrasound in medical imaging?

What is the primary mechanism by which ultrasound waves are used to clean jewelry and other delicate items?

What is the frequency range used in ultrasound imaging?

What is a common industrial application of ultrasound?

What is the primary advantage of using ultrasound in medical imaging?

What is the primary reason why ultrasound is used in certain medical therapies?

What is the primary mechanism by which ultrasound waves are used to weld plastics?

What is the primary reason why ultrasound is used in prenatal scans?

What is the frequency range used in ultrasonic cleaning?

Which of the following is a characteristic of ultrasound waves in medical imaging?

What is the primary mechanism by which ultrasound waves generate heat in biological tissues?

What is a common application of ultrasound in industrial settings?

Why is ultrasound used in certain medical therapies?

What is the primary reason why ultrasound is used in material testing?

What is the primary mechanism by which ultrasound waves are used to break up kidney stones?

What is the primary reason why ultrasound is used in various industrial and medical applications?

Which of the following industrial applications of ultrasound operates at frequencies between 20 and 40 kHz?

What is the primary mechanism by which ultrasound waves visualize muscles and internal organs in medical imaging?

What is the therapeutic use of focused ultrasound in breaking up kidney stones?

What is the primary advantage of using ultrasound in material testing?

What is the frequency range used in high-frequency ultrasound for welding plastics?

Which of the following is a characteristic of ultrasound waves used in medical imaging?

What is the primary mechanism by which ultrasound generates heat in biological tissues during physical therapy?

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