Uses of Sound waves - sonar definition - Ultrasound
Storyboard Tekst
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SONAR
Boats emit a pulse of ultrasound and then detect its reflection. Using the time difference, the depth of the ocean can be calculated.
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ECHOLOCATION
Dolphins emit pulses of ultrasound and use the echoes produced to locate things underwater.
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SEISMOMETER
Seismographs detect infrasound waves and can be used to locate the epicenters of earthquakes.
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MEDICAL IMAGING
Medical staff can use ultrasound to check on the progress of a pregnancy. By emitting ultrasound and using the reflected sound, a computer can produce an image of the fetus.