Scene : JuJu's Birthday Party
Juju : Hey Dad ! I have a doubt.Why do all helium balloons rise up in the air?But,if i fill up the balloon by mouth, It is going down.Why?
Lala : What happens when you push balloon inside water?
Juju : I can't.It rise up.
Lala : What happens when you drop a stone inside water ?
Juju : It submerges.
Lala : Can you guess the answer now?
Juju : I guess, Air ballon is lighter than water whereas solid steel ball is heavier than water.So,Ballon floats whereas steel ball plunge into water.
Lala : Good ! You are roughly correct.What happens when you submerge.