Tuesday, June 5, 2012

Why water won’t run through the bottle ?

Things need :

            ·         Glass jar with narrow neck
            ·         Funnel
            ·          plasticine
            ·         Screwer
            ·         Water

Instruction :

           *      Position a funnel in the neck of the jar.
           *      Seal it tightly with plasticine.
           *      Fill the funnel with water.

The water cannot flow into the jar. Now  make a hole in the plasticine , the water flow into the jar because the pressure is same inside and outside of the jar.

( i.e ) why you need to make a holes before you can pour liquid from a tin.

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