Fill the bowl with water.
2. Place the
cardboard fish on the surface of the
a drop of washing-up liquid soap just
behind the fish tail and watch
the fish swim away.
molecules cling to each other so tightly
they cause the surface of water to
squeeze together and bulge upwards
- like a bubble.
the soap makes contact with the surface of the water, this
bond between the molecules breaks
so the rest of the water pulls the
water that is not bonded away - taking
the cardboard fish with it !