Ultrasound in Medical & Industrial Imaging (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
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11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is the frequency threshold that defines ultrasound waves?
What is the frequency threshold that defines ultrasound waves?
Above 20,000 Hz
Why can't ultrasound waves be heard by humans?
Why can't ultrasound waves be heard by humans?
Frequency above 20,000 Hz
What are echoes?
What are echoes?
Reflections of sound
What happens when ultrasound reaches a tissue boundary in the body?
What happens when ultrasound reaches a tissue boundary in the body?
Some wave is reflected back
What measurement allows us to work out distance to tissue boundaries?
What measurement allows us to work out distance to tissue boundaries?
Time for reflection
What is a common medical use of ultrasound imaging?
What is a common medical use of ultrasound imaging?
Pre-natal imaging of foetus
Why is ultrasound safer than X-rays for pre-natal imaging?
Why is ultrasound safer than X-rays for pre-natal imaging?
Sound waves are non-ionising
In industrial imaging, where is ultrasound emitted?
In industrial imaging, where is ultrasound emitted?
Into pipes or materials
What normally reflects ultrasound in industrial imaging of materials?
What normally reflects ultrasound in industrial imaging of materials?
The far side of material
What indicates a fault in a material during ultrasound testing?
What indicates a fault in a material during ultrasound testing?
Reflection occurs sooner
What determines the position of a fault in industrial imaging?
What determines the position of a fault in industrial imaging?
Time for echo to return