As stone...as wind || Class - 4 || Unit - 7|| EVS || Whiteboardweb

 

 

 

 

 

 

 1.Water vapour changes into ----- when it cools.

 

 

water 

 

 

 

2.Water changes to ----- on heating

 

 

 

water vapour

 

 

 

3. Water can occur in three states: solid (ice), liquid, or gas (vapour)

 

 

 

 

4.What will happen to water,when it is cooled further?

 

It will change its state from liquid  to solid (ice)

 

 

5.The water vapour cools to form ----- 

 

 

water

 

6.What are solids?

 

 

 

Solids are a form of matter that has definite shape,weight and size.

 

 

7.Examples of solids

 

wood

 

rock

 

steel

 

gold

 

copper

 

sand

 

brick

 

brass

 

 

 

8.Write down the common properties of solids?

 

 

*Solids cannot flow.

 

 

*Solids have definite size,shape  and weight

 

9.What changes did you observe when air is filled in balloons of different shape?

 

 

Air is a gas. Like all gases, air does not have its own shape. It takes the shape of the container it is in.

 

 

Activity

 
 

Do the experiment who is hiding here?(page number - 78) Write your observation report.