We have already learnt a lot about water and how we should use it
carefully.Today ,we will do a very basic/simple experiment.
You must have heard the two big words -evaporation and condensation.
Water is magical -when in liquid form ,it can flow and take the shape of the
container it is in- a glass, a bowl or a bottle.Go ahead and try.
Make sure you do this in a basin so that water does’t spill -or else mum
may get angry.
When you put it in the freezer it turns solid ….ice,and takes the shape
of the container it is put into-try it yourself.
ice trays with ice
Now ,when water is boiled- it turns into steam,which is water in vapour
With its strong rays,the sun is continously changing water into vapour and
taking it up in the sky-this is called evaporation.
When this vapour mixes with the cold air in the sky it forms water
droplets.This is called condensation.
Condensation-when hot touches cold like you can see in the picture
EXPERIMENT: Evaporation and Condensation
Things needed: 1- A vessel of water
2-Stove to boil the water
3-Clear glass bowl which fits on the vessel of water
Method: Remember you need an adult with you and keep safe distance-
1-Light the stove and boil the water -let the steam come out
2- Put off the stove.Carefully remove the vessel with the
boiling water and put it on a table.
3 Now gently place the clear,dry glass bowl on the vessel.
Result: On boiling,the water turns to steam/ water vapour and
rises up.When it touches the glass bowl which is not hot the vapour
changes into water droplets which you can see.Slowly you will see the
bowl full of water droplets and they sliding down.
Children, this is how we get rain .Water vapour rises up into the sky-mixes
with the cold air to form water droplets, which form the clouds.Rain
comes from the clouds.Wasn’t that exciting?
Look at the pictures:
see the water droplets on the top bowl, slowly sliding down.
Have fun kids!Like i told you ,call your friends-learning is great while
Next time we will make our own clouds .Bye till then.
Isn’t it a magical world?Should we not take care of our world?