Something that is a light source produces its own light.

To get a fire going, you need fuel, air and heat.

A torch is a handheld light and can be powered by batteries or can have a burning flame.

To cast a shadow is to block light and cause a shadow.

Evidence is information which helps us to prove that something is true or not true.

Multiple shadows

Science

How light travels

Light sources and light reflectors (non-statutory)

Light enters our eyes

Reflected light

Changing the direction of light

Measuring reflected light: plan

Measuring reflected light: do and review

How shadows form

Shadow shapes investigation

The position of shadows (non-statutory)

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

How long have humans been creating and using light sources?

Which career is most likely to involve inventing and designing new ways for us to use light?

What was the earliest light source controlled by humans?

When more than one light is used, more than one {{}} can be cast by one object.

Which image shows the correct number of shadows?

information which shows how to set up an investigation

information which helps us to prove that something is true or not

information about what equipment to use in an investigation

A – light sources and B – light reflectors

A – human-made light source and B – natural light source

A – natural light source and B – human-made light source

Which is the correct pair of column headings for the table?

What is the name of the part of the eye into which light is reflected to allow us to see?

A shadow is {{}} on the opposite side of an object where the light source cannot shine.

Which of these diagrams shows the correct position of the light source?

light is reflected off them into our eyes

light is reflected off them from our eyes

they produce light which shines into our eyes

Starter Quiz

Which of these are light sources?