Aim:
To know the use of water.
What you need :
1. Piece of Sponge
2. Plastic Pipe
3. Water
4. Bucket.
How to do:
Take a piece of sponge and try to move through a pipe. It moves with some difficulty. Remove the sponge from the pipe. Dip it in water and try to move it again through the pipe and observe. What you see : Sponge moves freely in the pipe.
What you learn:
Water helps in ______ movement of material in narrow tubes like intestine. (easy)
