Expansion+and+Heating

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=**Expansion and Heating**=

Aim : To show substances expand when heated

Diagram:

Description from observation: The water in the beaker was set at 70 degree Celsius and the water in the test tube was at 40 degree Celsius. Since the water in the beaker was hot, it was creating more energy in the test tube which forced the water to expand and move up which has the same effect on the narrow tube.

When the cold water was heated, it expanded. This happened because the particles in the cold water got more energy from the heat so they got more energy and started colliding which made them mover further apart.