HEALTH Using Sound

Question 0

What are the three main parts of a stethoscope?

Answer 0

Bell and tubes and earpiece

Question 1

What material can sound not travel through?

Answer 1

Vacuum

Question 2

What does the bell do?

Answer 2

Collects sounds

Question 3

What does the tube do?

Answer 3

Carry the sounds to earpiece

Question 4

What does the earpiece do?

Answer 4

Passes sound to doctor while blocking out background noise

Question 5

What is an open bell used for?

Answer 5

Low frequency heart

Question 6

What is the closed bell used for

Answer 6

High frequency lung

Question 7

What is ultrasound?

Answer 7

Sound with a frequency above human hearing (20,000 hz)

Question 8

Range of human hearing is

Answer 8

20hz-20000hz

Question 9

Give a use of ultrasound in medicine

Answer 9

For building up images of tissues inside the body

Question 10

Give examples of noise pollution

Answer 10

Pneumatic drills, heavy traffic

Question 11

What starts to damage hearing?

Answer 11

90dB

Question 12

Pain threshold, Normal conversations, jet engine, heavy lorry, pneumatic drill, threshold. 0db, 60db, 95db, 100db, 130db, 140db

Answer 12

0-threshold
60-normal convo
95-heavy lorry
100-pneumatic drill
130-jet engine
140-painthreshold

Question 13

Explain how ultrasound is used

Answer 13

Ugly sound reflects off tissue boundaries in the patient. It takes different times for the sund waves to return from different depths and so an image of the patient can be built up using a computer. A layer of jelly is used to roe vent sound waves reflecting off skin.

Question 14

Why must e bell if a stethoscope have as small a volume as possible?

Answer 14

To ensure sufficient pressure exchange at the ear

Question 16

What are the advantages of ultrasound?

Answer 16

No surgery is needed, no harmful effects and saver than X-rays.

Question 17

How can ultrasound break up kidney stones?

Answer 17

A concentrated beam that will not affect surrounding tissue