Quick 5 Ultrasound.

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Presentation transcript:

Quick 5 Ultrasound

What are the units of wavelength? Hz m/s m 

What frequency is ultrasound? 20,000 kHz 20 Hz 20 kHz 2,000 Hz

Which is not a use of ultrasound? Cleaning delicate devices, like watches Scanning pregnant women In sunbed lamps Checking for cracks in pipes

Which word describes what happens as ultrasound passes into the womb? Dispersion Refraction Reflection Reflection and refraction

Why are X-rays not used for baby scans? Too expensive Too dangerous Technology not advanced enough Not widely available

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