Sound Waves + Ultrasound

Question 1

what type of waves are sound

Answer 1

longitudinal (p-waves)

Question 2

what do sound waves travel as when vibrating

Answer 2

compression and rarefaction

Question 3

how does sound travel in solid

Answer 3

the sound causes particles to vibrate and this action carries on

Question 4

why does sound travel fastest in solid

Answer 4

the particles are closest to one another which sound needs to be transmitted

Question 5

what happens to frequency of waves when travelling through different mediums

Answer 5

DOES NOT CHANGE

Question 6

if frequency doesn’t change and speed has increased what does this mean for wavelength

Answer 6

it must be longer
v = f x wavelength

Question 7

if frequency doesn’t change and speed has decreased what does this mean for wavelength

Answer 7

the waves get shorter
v = f x wavelength

Question 8

what is the range of frequency people can hear from

Answer 8

20Hz to 20kHz

Question 9

What frequency is ultrasound

Answer 9

above 20kHz

Question 10

what do ultrasound waves do differently to other sound waves

Answer 10

partially reflect back at border between different media