Page 85 - Erasmus_2017_2020

Experiment 2

For this experiment there are chosen the students who are brave and
who aren’t afraid of making experiments.

This experiment highlights the difference in the thermal conductivity of
air and the thermal conductivity of water, or the absorption and transfer of
heat in water as compared to air.

MATERIALS

Materials that you will require for this experiment will include the
following:

 Two balloons
 Water
 A candle
 Matchbox with matchsticks

PROCEDURE
1) Fill up one of the balloons with air
2) Light up the candle with a match stick
3) Hold up the balloon filled up with air very
close to the flame and observe what happens.
4) Put some water in the other balloon and fill

it up with air
5) Bring it closer to the fire as in above and

observe what happens.

PROCEDURE OBSERVATION

When the balloon filled with air touches the flame, it bursts.
However, the balloon that contains water does not burst upon touching the
flame.