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==Key Stage 4==
===Meaning===
[[File:AbsorptionSpectraAbsorptionSpectrum.png|right|300px400px|thumb|The [[Absorption Spectra|absorption spectraspectrum]] of several [[metalelement]]swithin one [[sample]].]]
'''Absorption spectra''' are the specific [[wavelength]]s of [[light]] [[Absorb (Physics)|absorbed]] by the [[electron]]s in [[atom]]s as they gain [[energy]].
===About Emission Absorption Spectra===: An '''absorption spectrum''' is made by passing [[White Light|white light]] through a [[material]] or [[reflection|reflecting]] it off a [[material]] then sending it through a [[Prism (Physics)|prism]] to separate the [[colour]]s.
: The [[spectrum]] of [[White Light|white light]] is a continuous change of [[colour]]s with all [[wavelength]]s having the same [[intensity]].
: An '''absorption spectrum''' is a set of specific [[wavelength]]s with a low [[intensity]]. This appears as dark lines of of missing [[colour]] from the normal [[spectrum]] made by [[White Light|white light]].
| style="height:20px; width:200px; text-align:center;" |This [[diagram]] shows an [[electron]] gaining [[energy]] by [[Absorb (Physics)|absorbing]] an [[Electromagnetic Wave|electromagnetic wave]] and becoming [[excited]] (moving to a higher [[Energy Level|energy level]]).
|}
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Absorption; lines, page 111, GCSE Physics; Student Book, Collins, 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 ''Absorption spectra, pages 191, 192, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Absorption spectrum, page 359, GCSE Combined Science, Pearson 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 ''Absorption spectrum, page 95, 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 ''Absorption spectrum, pages 178-179, Gateway GCSE Physics, Oxford, OCR '']