Ultrasound

Question 1

Ultrasound

Answer 1

Ultrasound is sound with a frequency above 20,000Hz

Question 2

Wave speed equation

Answer 2

Wave speed = frequency x wave length

Question 3

Wave length equation

Answer 3

Wave length = wave speed / frequency

Question 4

Frequency equation

Answer 4

Frequency = wave speed / wave length

Question 5

P waves

Answer 5

Longitudinal

Question 6

S waves

Answer 6

Transverse

Question 7

Depth equation

Answer 7

Depth = 1/2 x wave speed x time

Question 8

Infrasound

Answer 8

Infrasound is below the range of human hearing

Question 9

What are the earths layers

Answer 9

Crust, mantle, outer core and inner core

Question 10

Frequency

Answer 10

Number of waves per second

Question 11

Wavelength

Answer 11

How long the wave lasts

Question 12

Amplitude

Answer 12

Maximum displacement from equilibrium

Question 13

Vibrations or oscillations

Answer 13

Motion around a fixed point

Question 14

Longitudinal

Answer 14

Waves where transfer of energy is parallel to oscillations

Question 15

The cochlea

Answer 15

Snail shell shape, the membrane inside changes in thickness and therefore can detect different frequency

Question 16

Medical ultrasound scanning

Answer 16

Detect foetus, open up your body without surgery, detect depth of the womb