Hearing

Name parts of the ear
you already know

1 / 23

Slide 1: Mind map

BiologieMiddelbare schoolvwoLeerjaar 1

This lesson contains 23 slides, with interactive quizzes, text slides and 1 video.

Items in this lesson

Name parts of the ear
you already know

Slide 1 - Mind map

In Dutch

Slide 2 - Slide

External/outer ear

Pinna

Ear canal

Eardrum (sort of border)

Slide 3 - Slide

Slide 4 - Slide

So? how does hearing 'technically' work?

Stimulus?

Slide 5 - Slide

Slide 6 - Video

Collecting info

Slide 7 - Slide

Slide 8 - Slide

The way sound travels

Pinna - Ear canal - Eardrum - Hammer - Anvil - Stirrup - Cochlea (creates nerve impulse) - Auditory nerve --> cerebrum

Slide 9 - Slide

What is the missing word in the way sound travels through the ear?
Pinna - Ear canal - ..?.. - hammer - anvil - stirrup - cochlea - auditory nerve

Slide 10 - Open question

Hertz vs Decibel

Hertz = unit to express how low or high a certain sound is.

Decibel = unit to express how loud a certain sound is.

Slide 11 - Slide

Hertz

Many waves give a higher sound than just a few waves

Slide 12 - Slide

Hertz

Here you can see a low sound becoming a little bit higher.

Slide 13 - Slide

Decibel

A big soundwave produces a loud noise. A small soundwave produces a more quiet sound.

Slide 14 - Slide

Decibel: This sound starts loud!

Slide 15 - Slide

Air pressure

Why does it hurt and why do our ears pop?

Slide 16 - Slide

When landing a plane

Slide 17 - Slide

Slide 18 - Slide

When climbing a mountain/taking flight

Air pressure on the outside is very low, on the inside relatively high. You'll have to swallow some water in order to 'pop' your ears.

Slide 19 - Slide

Air pressure pushes on eardrum

Slide 20 - Slide

Eustachian tube connects to your nasal cavity/throat.

Slide 21 - Slide

Why do we have semicircular canals?

Slide 22 - Open question

Which part should I explain again or did you find most difficult?

Slide 23 - Open question