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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]].
==Key Stage 2==
===Meaning===
An '''ear''' is the part of the body we use to [[hearing|hear]] [[sound]].
: Singular [[Noun]]: '''Ear'''
: Plural [[Noun]]: '''Ears'''
==Key Stage 3==
===About Ears===
: Most animals have two [[ears]].: [[Ears ]] can be damaged by listening to loud sounds [[sound]]s too often.: The [[ears ]] of different animals [[animal]]s can hear different sounds[[sound]]s. Some animals [[animal]]s can hear sounds [[sound]]s too high pitched [[pitch]]ed for us to hear and some can hear sounds [[sound]]s too low pitched [[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 vibrates [[vibrate]]s like a drum skin when [[sound ]] hits it.*[[Ear BonesOssicles]] - Three tiny bones [[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 '']