Year 4 Science · Changing state and the water cycle · Summary
Year 4 Science Changing state and the water cycle: summary and key words
Part of the Year 4 Science changing state and the water cycle chapter. Chapter overview · whole chapter on one page
Chapter summary
| Skill | Method |
|---|---|
| Changing state | Melting: solid to liquid, by heating. Freezing: liquid to solid, by cooling. |
| Temperatures of water | Water freezes and ice melts at 0 degrees Celsius. Water boils at 100 degrees Celsius. |
| Evaporation | A liquid turns into a gas at its surface. It is faster when the place is warmer. |
| Condensation | A gas cools and turns into drops of liquid. It forms clouds, dew and drops on a cold glass. |
| The water cycle | Evaporation, condensation, precipitation and collection. The water goes round and round. |
Can you…?
- I can name melting, freezing, evaporation and condensation
- I can say that some materials change state when they are heated or cooled
- I can read the temperatures at which water freezes and boils, in degrees Celsius
- I can say that evaporation is faster when it is warmer
- I can explain condensation and evaporation, and their parts in the water cycle
- I can put the four stages of the water cycle in order
Key terms
- change of state
- when a material changes from a solid, to a liquid, or to a gas, or back again
- melting
- when a solid changes into a liquid, by heating
- freezing
- when a liquid changes into a solid, by cooling
- evaporation
- when a liquid changes into a gas at its surface
- condensation
- when a gas cools and changes into a liquid
- water vapour
- water in the form of a gas, in the air
- precipitation
- water that falls from clouds as rain, snow or hail
- water cycle
- the way water moves round the Earth, through evaporation, condensation, precipitation and collection
- degrees Celsius
- the unit used to measure temperature, written °C