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Description

Added by GGNZ National Programme Team.

Make rain

Resources

• glass jar
• plate
• hot water
• ice cubes

Instructions

1. Pour about 5cm of very hot water into the glass jar.

2. Cover the jar with the plate and wait a few minutes before you start the next step.

3. Put the ice cubes on the plate.

4. Look for the condensation that is forming on the bottom of the plate. When there is enough condensation in will drip back into the jar. You have made rain!

EXPLANATION:
What happens? The cold plate causes the moisture in the warm air, which is inside the jar, to condense and form water droplets. This is the same thing that happens in the atmosphere. Warm, moist air rises and meets colder air high in the atmosphere. The water vapour condenses and forms precipitation that falls to the ground.

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