5.4 Hearing 1HVTTO

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• Biologie
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• Leerjaar 1

5.4 Hearing

• Jacket in your locker

• Put your things on your desk

       Laptop/Book

       Notebook, pencil case

• Bag on the floor

• Read pages 126-127

5

minute

00

second

+30 s

Lessongoals

• Remember: I can name and recognize the parts of the ear by identifying them on a diagram.

• Understand: I can explain how a sound is heard by describing the process of sound transmission through the ear.

• Understand: I can explain how the ear helps with balance by describing the role of the inner ear in maintaining stability.

Homework 5.4

Asgmt 21-28

What part of the eye changes light stimuli into impulses?

A

Pupil

B

Lens

C

Retina

D

Optic nerve

Finish the table

chemicals in the air

Tongue

Eye

Nose

Chemicals in food

Light

Sound

Ear

Stimulus

location of sensory organ

What part of the retina is best at seeing colours?

A

Sclera

B

Fovea

C

Choroid

D

Blind spot

The ear

External part

• 'catches' sounds

Internal parts

• Bring sound to the receptors

• Help you really hear the sound

• Sense of balance

Pair-Share

• Pair: Discuss and compare with your neighbour

• Talk about it: Why do we have 2 ears? How is that better than 1?

• Think about it: What can not be done with 1 ear, that can be done with 2?

• Share: Talk about given answers during plenary session.

2

minute

00

second

+30 s

Hearing a sound

Sound is produced

The ear (pinna) 'catches' the sound stimulus and makes it go into your ear canal

The sound stimulus makes the eardrum vibrate.

This in turn makes the hammer, anvil and stirrup vibrate.

Finally the vibration goes into the cochlea.

Inside the cochlea, sensory receptors turn the stimuli into impulses, which they send through the auditory nerve.

The auditary nerve sends the impulses towards the brain

The brain recognizes the impulses. At this point you become aware of the sound.

Because there are two ears, the brain can use impulses from both to tell where sound is coming from.

The sense of balance

The semicircular canals work like a level     . 

Fluids inside them move and allow you to notice movement, acceleration and position.

A level is a tool used by many people to tell if the thing they are making is straight

Zs = Working in Silence

• No asking questions

• Silent, don't disturb anyone

• Stay at your  desk

What you should do: 5.4

• TB: Pages 126-127

• WB: Asgmt  21-28

• Lt: Asgmt 1-8

Done with the above?

• Work on the next chapter(s)

• Learn for the test 

• Make other homework

• Read a book

6

minute

00

second

+30 s

Zw = Working with whispering

• Teacher is available for questions

• Only whisper with the student next to you

• Stay at your  desk

What you should do: 5.4

• TB: Pages 126-127

• WB: Asgmt  21-28

• Lt: Asgmt 1-8

Done with the above?

• Work on the next chapter(s)

• Learn for the test 

• Make other homework

• Read a book

Explain: Without your ears, going to an amusement park would be quite boring.

Tidy Duty

3 people each lesson

• Desks: empty and straight

• Chairs:  underneath the desks OR end of day: on the desks

• Floor: no rubbish