They’re dark patches of shade where light does not reach. Light can travel through transparent objects, like glass,or translucent objects like this clear silicone lid. But a shadow forms when an ...

Day and night are explained with reference to the position of the sun and rotation of the earth.Transparent and opaque objects are used to demonstrate how shadows form.

Learn about how light is transmitted through different materials and how to create ray diagrams to show light transmission with this guide for KS3 physics students aged 11-14 from BBC Bitesize.