Sound, the Ear and Hearing

Question 0

Complete the sentence:

The larger the vibration, the …….. the sound

Answer 0

Louder

Question 1

What is sound?

Answer 1

A vibration

Question 2

What is the frequency?

Answer 2

How many sound waves are made each second

Question 3

What is loudness?

Answer 3

How ‘big’ the waves are

Question 4

What is an echo?

Answer 4

A reflected sound wave

Question 5

What is the way to calculate echo locations?

Answer 5

Speed = distance / time

The / is the equivalent to divided symbol) :

Question 6

What speed does sound travel through air?

Answer 6

5000m/s

Question 7

At what speed does sound travel through liquid?

Answer 7

1500m/s

Question 8

At what speed does sound travel through air?

Answer 8

300m/s

Question 9

Why does sound travel through solids best?

Answer 9

Because the particles are all touching (as sound travels through particles that vibrate), it passes through solids best

Question 10

What part of the ear are sound waves collected?

Answer 10

Pinna

Question 11

What are the 3 bones in the ear called ALTOGETHER?

Answer 11

The ossicles

Question 12

What does the cochlea Change the vibrations to?

Answer 12

Electrical waves

Question 13

What is the nerve called that send the signal from the ear to the brain?

Answer 13

The auditory nerve

Question 14

What is the long tube the vibrations have to go through before they get to the ear drum?

Answer 14

Ear canal

Question 15

What do the ossicles do?

Answer 15

Amplify the vibrations

Question 16

What is the average hearing range of a healthy young person?

Answer 16

20Hz - 20,000Hz

Question 17

What can exposer to loud noises do?

Answer 17

It can permanently damage ears