P12-Wave Properties

Question 1

What is the range of hearing for humans

Answer 1

Between 20hz and 20khz

Question 2

What frequency of sound does ultrasound vibrate at

Answer 2

Above 20,000 hz,More than humans can comprehend

Question 3

What happens when an ultrasound wave hits a barrier between two mediums

Answer 3

Some waves will be reflected and others will continue on and be refracted

Question 4

How can we figure out an internal structure of something

Answer 4

By using ultra sound waves,these partially reflect at boundaries between two mediums

Question 5

How are ultra sound waves used in pre natal scanning

Answer 5

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

Question 6

What are three uses of ultrasound

Answer 6

Pre natal scanning,Checking the quality of industrial products,echo sounding (sonar)

Question 7

What are P Waves

Answer 7

Longitudinal waves that can travel through solids and liquids

Question 8

What are S waves

Answer 8

Transverse waves that can travel through only solids

Question 9

What happens when seismic waves reach a boundary between two mediums

Answer 9

They can be reflected absorbed or transmitted

Question 10

What is a transverse wave

Answer 10

A wave where the direction of oscillation is perpindicular to the direction of motion

Question 11

What is a longitudinal wave

Answer 11

A wave where the direction of motion is parallel to the direction of oscillation