Science Secrets · Drawing 33 of 40
A Little Click, Then Light
Everyday Inventions

Batteries supply energy to this flashlight. Its switch closes or opens the circuit inside. When current flows, the lamp can shine. The sock cannot hide any longer!
Did you know?
Opening the switch breaks the circuit.
Look together
Which control operates this flashlight?
An idea to try
With an adult, observe a closed flashlight. Compare two switch positions without looking directly into its light.
For the adult reading along
A little more to discover
The batteries and circuit remain inside the closed compartment. The switch controls a complete electrical path. Dashed lines are graphic guides to the illuminated area. The flashlight lens faces the sock under the bed. The hiding sock adds a little humour.
Sources and illustration notes (1)
Simplified scene and shapes. Models, imagined comparisons and enlargements do not preserve all real measurements.
These links lead to other websites. Explore them with an adult. References identify the institution and the related lesson; some linked pages are in French.
- Science World: Build a CircuitBatteries supply energy to this flashlight. Its switch closes or opens the circuit inside. A little click can let current flow and make the lamp work.
Source review: 2026-10-13. Illustrations are simplified for colouring.
