• Student test on convection

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Parent and Teacher Notes

This experiment helps explain convection to your child by letting them build and observe their own spinning spiral. Convection makes the spiral spin. Hot air rises and pushes the spiral upwards and horizontally, then cools down again, ready to repeat the process.

Scientific concepts covered:

Convection: Convection is when heat travels through gases or liquids. Hot air rises, cools down, and sinks back down, ready to rise again. Heated air molecules move faster, creating more space between them and becoming lighter than the surrounding cooler air. Cold air molecules move slower, creating less space between them and becoming heavier than the surrounding warmer air. This repeating process is the cycle known as convection.

Molecule: The smallest unit of a chemical substance that can exist. They are microscopic and make up many objects. For example, there are water molecules, and air molecules.

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