P12-Wave Properties
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What is the range of hearing for humans
Between 20hz and 20khz
What frequency of sound does ultrasound vibrate at
Above 20,000 hz,More than humans can comprehend
What happens when an ultrasound wave hits a barrier between two mediums
Some waves will be reflected and others will continue on and be refracted
How can we figure out an internal structure of something
By using ultra sound waves,these partially reflect at boundaries between two mediums
How are ultra sound waves used in pre natal scanning
Some waves are partially reflected at the different mediums like tissue and the fluid surrounding the feoutus or the fluid and feotus.These are reflected back to the machine and the timings and distribution of these echos are then processed to produce a live image
What are three uses of ultrasound
Pre natal scanning,Checking the quality of industrial products,echo sounding (sonar)
What are P Waves
Longitudinal waves that can travel through solids and liquids
What are S waves
Transverse waves that can travel through only solids
What happens when seismic waves reach a boundary between two mediums
They can be reflected absorbed or transmitted
What is a transverse wave
A wave where the direction of oscillation is perpindicular to the direction of motion
What is a longitudinal wave
A wave where the direction of motion is parallel to the direction of oscillation