A shadow is formed when an opaque object blocks out the light.

An object that is a light source produces its own light.

Light cannot pass through objects that are opaque.

Features make up the structure, form or appearance of something.

Reflections of objects are images that form when light bounces off a shiny surface.

How shadows form

Science

In the Light and how it travels unit, pupils learn that light travels in straight lines and how objects are seen. In the Sound, light and vision unit, they will build on this knowledge to learn more about how light is reflected off mirrors, and how the eye can see objects by the light they reflect

In the Introduction to Light and shadows unit, pupils learnt that shadows are formed when the light from a light source is blocked by an opaque object. In this Light and how it travels unit,  pupils will build on this knowledge to use the idea that light travels in straight lines to explain why shadows have the same shape as the objects that cast them

This unit explores how light travels in straight lines, explaining how we see objects and why shadows form the shape of the object casting them. It focuses on planning scientific enquiries, taking precise measurements, making predictions, and evaluating evidence to present findings.

Light and how it travels

Physical activity and equipment requiring safe use

shapes which are the same colour as the object making them

shapes showing the same features as the object

Which of these would show the features of the object causing it?

Which type of objects do not let light to travel through them?

a shadow is made when light shines out of an object

a shadow is made when light is stopped or blocked by an object

A shadow can be different sizes depending on the {{}} of the object from the light source.

these happen when light is blocked by an object

these happen when light bounces off an object onto a shiny surface

Match the word with the description of how it forms.

In the eye, the opening which allows light to enter is called the {{}}.

When light is reflected off an object it...

a tool used to see over things and round corners 

a tool used to look at very small objects

a tool used to look at objects very far away

Content guidance

Risk assessment required - equipment

Adult supervision required

This lesson will be removed by end of Summer Term 2025.

How shadows form

Lesson outcome

Content guidance

This lesson will be removed by end of Summer Term 2025.