Ultrasound and Infrasound
What have you learnt about waves so far?
(longitudinal and transverse)
(longitudinal and transverse)
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Lesduur is: 50 minOnderdelen in deze les
What have you learnt about waves so far?
(longitudinal and transverse)
(longitudinal and transverse)
Slide 1 - Woordweb
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Slide 10 - Video
The human auditory range is...
Slide 11 - Open vraag
Sounds with a frequency below 20 Hz are called...
Slide 12 - Open vraag
Sounds with a frequency above 20,000 Hz are called...
Slide 13 - Open vraag
Slide 14 - Tekstslide
Slide 15 - Tekstslide
Name an animal which can hear lower frequency sounds than humans.
Slide 16 - Open vraag
Name an animal which can hear higher frequency sounds than humans.
Slide 17 - Open vraag
State a frequency of noise that a dog can hear but a mouse cannot.
Slide 18 - Open vraag
State a frequency of noise that a mouse can hear but a dog cannot.
Slide 19 - Open vraag
Dog whistles have a frequency range of 22,000 to 45,000 Hz. Why can a dog hear it but no one else can?
Slide 20 - Open vraag
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Why are ultrasound used for pregnancy scans and not x-rays?
Slide 26 - Open vraag
State another use of ultrasound in a hospital setting.
Slide 27 - Open vraag
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In the USA, tornadoes cause massive fatalities every year. Explain how they can use infrasound to protect people.
