The Digital Bits Science Labs are fun science experiments for young children. Kids, make sure you have an adult's permission before trying any of these science experiments.
Digital Bits Science Lab
Science Experiments and Education for Kids and Parents
Heat is energy
Description:
This is an experiment that shows the concept of heat being energy.
Equipment needed:
Hot water
Cold water
Two identical glasses
The Digital Bits Science Lab Experiment:
As water gets warmer, water molecules move around faster and faster. We can’t see a molecule without help, of course, but we can still see the effects of hot and cold water molecules.
Fill your glasses. One should have hot water in it, the other cold water. Pick a color of food coloring.
Put three drops of food coloring in each glass.
Wait, and watch what happens.
You can tell from the food coloring which glass is holding the hot water, and which is holding the cold. The cold water contains less energy - the water molecules are moving slower, and therefore the coloring mixes slower.
The hot water’s molecules are moving faster - the water contains more heat, and therefore more energy. So the food coloring mixes faster.
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