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Ears
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===Meaning===
[[File:EarPicture.png|right|300px200px|thumb|A human '''ear''' lobe]]
An '''ear''' is the part of the body we use to [[hearing|hear]] [[sound]].
: You do not need an '''ear''' lobe to hear. Most of the important parts of the '''ear''' are deep inside the hole.
: If your '''ear''' does not work and you cannot hear, then you are deaf.
: Ears should not be cleaned with cotton bud as it can cause an 'ear infection'.
===Examples===
{| class="wikitable"
|An elephant's '''ear'''.
|}
==Key Stage 2==
===Meaning===
An '''ear''' is the part of the body we use to [[hearing|hear]] [[sound]].
: Singular [[Noun]]: '''Ear'''
: Plural [[Noun]]: '''Ears'''
===About Ears===
: The '''ear''' lobe is the shaped part of an '''ear''' that we can see.
: You do not need an '''ear''' lobe to hear. Most of the important parts of the '''ear''' are deep inside the hole.
: If your '''ear''' does not work and you cannot hear, then you are deaf.
: Ears should not be cleaned with cotton bud as it can cause an 'ear infection'.
===Examples===
{| class="wikitable"
|-
|[[File:LizardEar.png|center|200px]]
|[[File:MonkeyEar.png|center|200px]]
|-
|The '''ear''' of a reptile.
|A monkey's '''ear'''.
|-
|[[File:DogEar.png|center|200px]]
|[[File:ElephantEar.png|center|200px]]
|-
|The '''ear''' on a dog.
|An elephant's '''ear'''.
|}
==Key Stage 3==
===Meaning===
[[File:Ear.png|right|300px|thumb|A cross section of a [[human]] ear.]]
The '''ear''' is a [[Sense Organ|sensory organ]] that can detect [[sound]].
===About Ears===
: Most animals have two [[ears]].
: [[Ears]] can be damaged by listening to loud [[sound]]s too often.
: The [[ears]] of different [[animal]]s can hear different [[sound]]s. Some [[animal]]s can hear [[sound]]s too high [[pitch]]ed for us to hear and some can hear [[sound]]s too low [[pitch]]ed for us to hear.
There are several parts of the ear you should know:
*[[Pinna]] - The shaped [[cartilage]] collects the sound.
*[[Ear Canal]] - The tube leading to the [[Ear Drum|ear drum]].
*[[Ear Drum]] - This [[vibrate]]s like a drum skin when sound hits it.
*[[Ossicles]] - Three tiny [[bone]]s that pass the [[Vibrate|vibration]] to the [[cochlea]].
*[[Cochlea]] - A spiral tube with a [[liquid]] inside it and tiny hairs attached to [[nerve]] cells.
*[[Eustachian Tube]] - A tube used to keep the [[pressure]] the same both sides of the [[Ear Drum|ear drum]] to stop it bursting.
*[[Auditory Nerve]] - The [[nerve]] connecting the '''ear''' to the [[brain]].
{| class="wikitable"
|-
|[[File:EarDiagram.png|center|400px]]
|-
| style="height:20px; width:400px; text-align:center;" |A [[diagram]] of the ear.
|}
==Key Stage 4==
===Meaning===
The '''ear''' is a [[Sense Organ|sensory organ]] that can detect [[sound]].
===About Ears===
: [[Ears]] can only detect a certain range of [[frequency|frequencies]] of [[sound]] which depends on the size of the [[Ear Drum|ear drum]].
: [[Human]] [[ear]]s can only detect [[frequency|frequencies]] of [[sound]] above 20Hz and below 20,000Hz. [[Sound]] below 20Hz is referred to as [[infrasound]]. [[Sound]] above 20,000Hz is referred to as [[ultrasound]].
: Different [[animal]]s can hear different [[frequency|frequencies]] of [[sound]]s. Some [[animal]]s can hear [[infrasound]] and some can hear [[ultrasound]].
There are several parts of the ear you should know:
*[[Pinna]] - The shaped [[cartilage]] acts to direct [[sound]] into the [[Ear Canal|ear canal]].
*[[Ear Canal]] - The tube leading to the [[Ear Drum|ear drum]].
*[[Ear Drum]] - This [[vibrate]]s like a drum skin when [[sound]] hits it.
*[[Ossicles]] - Three tiny [[bone]]s that pass the [[Vibrate|vibration]] to the [[cochlea]].
*[[Cochlea]] - A spiral tube with a [[liquid]] inside it and tiny hairs attached to [[nerve]] cells.
*[[Eustachian Tube]] - A tube used to keep the [[pressure]] the same both sides of the [[Ear Drum|ear drum]] to stop it bursting.
*[[Auditory Nerve]] - The [[nerve]] connecting the '''ear''' to the [[brain]].
{| class="wikitable"
|-
|[[File:EarDiagram.png|center|400px]]
|-
| style="height:20px; width:400px; text-align:center;" |A [[diagram]] of the ear.
|}
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Ear, page 191, GCSE Physics, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Ears, hearing, page 183, GCSE Physics; Third Edition, Oxford University Press, AQA '']
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Ears, page 104, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Ears, pages 58-59, GCSE Physics, Pearson Edexcel '']
====OCR====
:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Ear, pages 148-149, Gateway GCSE Physics, Oxford, OCR '']