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SIMPLY EXPERIMENTS:
THERMICS
8.
FOUNTAIN
 Problem:
How we can negotiate bottle partially filled with liquid, which is locked
with tube-cork to fountain?
Widgets:
bottle with cork, glass tube,
container with water
Description of experiments:
We fill a bottle with water up to 1/3 and cover it with glass
tube-cork. Everything must be gasket! The tube reach bottom of
the bottle. Then we immerse the bottle into container with hot
water. Fountain is ready.
Physical problem solving:
When we warming air in closed glass bottle, we rise the inner
pressure in bottle. After immerse of the bottle into container
with hot water we rise the temperature of "bottle" air. Air
into bottle rises volume and push out water.
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