ultrasound

Question 1

what is ultra sound

Answer 1

frequency that is higher than human hearing

Question 2

can animals use ultra sound if so which ones

Answer 2

yessss

dogs, dolphins,bats

Question 3

what is sonar used for

Answer 3

navigate underwater

Question 4

why can it be used in hospitals for

Answer 4

scan unborn babies because it is safer than x rays

Question 5

how does ultrasound scanning work

Answer 5

a gel is used in the woman’s abdomen to make sure that there is good contract with the transmitter and the skin and then ultrasound waves are transmitted into the womb and are reflected back. the receiver detects the reflects waves which forms a image of the unborn baby

Question 6

what is the loudness of a sound measured in

Answer 6

decibels (dB)

Question 7

the quietest sound a human can hear eg pin drop is…

Answer 7

0dB

Question 8

a whisper

Answer 8

30dB

Question 9

normal conversation

Answer 9

60dB

Question 10

what is noise pollution

Answer 10

any annoying noise that is harmful environment