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Understand How Light Bulbs Work

In this worksheet, students will explore how light bulbs in electric circuits work.

'Understand How Light Bulbs Work' worksheet

Key stage:  KS 2

Year:  Year 6 Science worksheets

Curriculum topic:   Electricity

Curriculum subtopic:   Energy in Circuits

Difficulty level:  

Worksheet Overview

A lightbulb is something we use every day to give us light. Have you ever wondered how they work?


light bulb


Inside the glass bulb is something special called a filament.


The filament is a tiny wire made from a special material called tungsten.

When we send electricity through this filament, it gets really hot - so hot that it starts to glow and shine brightly.

This glowing filament is what gives us light.


light bulb


The filament is inside a glass casing that protects it and lets the light shine through.

When we screw the bulb into a lamp or fixture and turn on the switch, electricity flows through the filament, making it glow and produce light.


To sum up: bulbs work by sending electricity through a special wire called a filament, which gets hot and glows, giving us the light we need to see in the dark.


This activity will help us to understand this.


girl has an idea


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