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: An '''opaque''' object doesn't let any light through. You cannot see through an '''opaque''' object.
: Some objects are more '''opaque''' than others. If they let only some light through they are called [[translucent]]. If they let all the light through then they are called [[transparent]].
===Examples=== {| class="wikitable"|+ Opaque Materials|-| style="height: 20px; width:200px; text-align:center;" |Brick| style="height:20px; width:200px; text-align:center;" |Metal| style="height:20px; width:200px; text-align:center;" |Wood|-|[[File:BrickRed.png|center|200px]]|[[File:MetalSword.png|center|200px]]|[[File:Wood.png|center|200px]]|} {| class="wikitable"|+ Transparent Materials|-| style="height:20px; width:200px; text-align:center;" |Glass| style="height:20px; width:200px; text-align:center;" |Water| style="height:20px; width:200px; text-align:center;" |Air|-|[[File:GlassBroken.png|center|200px]]|[[File:Water.png|center|200px]]|[[File:Sky.png|center|200px]]|} ===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 ''Opaque objects, colour of, pages 208-9, 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 ''Opaque objects, page 207, GCSE Physics; Third Edition, Oxford University Press, AQA '']:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Opaque objects, page 253, GCSE Physics; The following materials are Complete 9-1 Course for AQA, CGP, AQA '']:[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac347 'opaque'Opaque objects, page 85, GCSE Physics; The Revision Guide, CGP, 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 ''Opaque, page 226, GCSE Physics; Student Book, Collins, AQA '']