An explanation of where light comes from and how shadows are created. Light is produced from light sources such as a lamp, a candle or the Sun. Light travels away from a light source until it meets an object. When something blocks light travelling from a source, a shadow is made.

This clip is from:
Science Clips, Light and Shadows
First broadcast:
10 October 2007

Students could explore the creation of shadows using torches and a range of opaque objects. They could experiment with changing the position of the object in relation to the torch, and observe what happens if two or three torches are used. Ask students to share their favourite shadow-creating effect with the class, and to describe how this is being created.

Students could be given activity sheets illustrating different objects with shadows. Ask the students to draw in the position of light source.

Challenge students to apply their knowledge of creating shadows to make their own shadow puppet show.