THE LITTLE WONDER ATLAS · AGES 6–12 WITH A GROWN-UP
When water becomes steam
Heating water can make a gas that carries energy.
No timer. No account. Learn at your pace.
Follow the wonder
Choose a numbered step to highlight its place in the picture.
Energy enters liquid water and its molecules move more vigorously.
At the boiling point for the local pressure, vapour bubbles form within the liquid.
In machinery, pressurized steam can move a piston or spin a turbine.
Water vapour can condense into liquid and transfer heat to its surroundings.
TRY ONE QUESTION · HINTS ARE WELCOME
What is the white mist you can see above hot water?
Take your time. You can read the map again.
Show me the answer
Tiny liquid droplets
For grown-ups: sources and learning notes
Reviewed 28 September 2026. These are introductory explanations; the diagrams simplify real structures and processes.