Year 3 science · D.16 · Earth materials
Condensation
Water vapor (invisible gas) turns into liquid drops when it touches a cold surface. This is called condensation, like on cold glass or windows.
See worked examples
Theo wonders: When a classmate opens a cold lunch box in summer, drops form. What causes this?
- Warm food heats the air
- Warm air meets cold surface (right)
- A breeze blows from outside
Theo wonders: Why do small dots appear on the outside of a cold soda cup?
- It's from dust
- The air moves away
- Water vapor turns into liquid (right)
When Maya holds a cold drink, small droplets form on the glass. What happens to water vapor in the air?
- It goes away
- It becomes ice
- It turns into liquid (right)
Tip: Water vapor (invisible gas) turns into liquid drops when it touches a cold surface. This is called condensation, like on cold glass or windows.
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