Hearing, The Ear

Question 1

Sound waves

Answer 1

Pitch and loudness

Question 2

Pitch

Answer 2

Heights are the same between high and low. Wavelengths are different and effect the pitch.

Question 3

Loudness

Answer 3

Wavelengths don’t change in the loudness. The height changes to change the loudness.

Question 4

Path of sound waves

Answer 4

1. Outer ear
   - pinna
   - auditory canal
   - tympanic membrane
2. Middle ear
   - hammer
   - anvil
   - stirrup
3. Inner Ear
   - oval window
   - cochlea

Question 5

Outer ear

Answer 5

Sound waves move through air

Question 6

Pinna

Answer 6

Collects sound waves and funnel into the ear

Question 7

Auditory Canal

Answer 7

Provides physical separation between outside and tympanic membrane

Question 8

Tympanic membrane

Answer 8

Sound waves hit and it vibrates

Question 9

3 middle bones

Answer 9

• hammer
• anvil
• stirrup

Question 10

Middle ear

Answer 10

Sound waves travel through solid

Question 11

Inner ear

Answer 11

Sound waves travel through liquid

Question 12

Oval window

Answer 12

Thin membrane

Question 13

Cochlea

Answer 13

Retains suseptors

Question 14

Functions of the ear

Answer 14

1. hearing (detecting sound waves)
2. balance (dynamic equilibrium)
3. balance (static equilibrium)

Question 15

Pitch is determined by…

Answer 15

Pitch is determined by where the hairs are hit

Question 16

Loudness is determine by….

Answer 16

Loudness is determined by how many hairs are hit

Question 17

Decibels (dB)

Answer 17

0-120
15-rustling leaves
45-conversations
60-crowd noise
75-vaccuum
90-jack hammer

Question 18

Euctachian Tubes

Answer 18

connects middle ear to throat (for air pressure)

Question 19

Ear Infections

Answer 19

-usually starts out as an infection in the throat
Child
1. Eustachian tube is shorter
2.Eustachian tube not as steep
3.has an adnoid (lymph nodes)

Question 20

Lymphnodes

Answer 20

part of the lymph system (liquid)

lymph fluid has to be cleaned in the lymph system with white blood cells

Question 21

Stereo hearing

Answer 21

2 ears help pinpoint where sound is coming from