How old is your water?
Have a look at the water.
It has been around about as long as the Earth has!
It was there for the dinosaurs, for knights and squires.
And you thought us teachers were old!
Heat from the Sun causes water on Earth (in oceans,
lakes etc) to evaporate (turn from liquid into gas).
It rises into the sky. This water vapour collects in the
As water vapour in the clouds cools down it becomes
We call this condensation.
Where in the classroom can we find
Water falls from the sky.
We call this precipitation.
This can be as:
Oceans, lakes and Rivers ‘collect’ the water that has
Then the whole process is done again.
Why is it useful?
We need the water cycle so we can drink fresh water.
We also need it to water plants.
We can’t use sea water because it is too salty!