LET'S MAKE CLOUDS

MATERIALS

Glass jar with lid
Ice cubes
Hot water
Flashlight

PROCEDURE

1. Fill jar half-full with hot water*
(*have an adult do this)
2. Place lid upside down on top of jar
Wait a few minutes
3. Now place ice cubes on the lid
Observe. May darken room and shine flashlight
through jar for better viewing

EXPLANATION

You should see moisture condensing on
the sides of the jar, resembling clouds.
When the air is cooled by the ice cubes, the
water condenses and drops back down into
the water.
This is similar to water vapor cooling
in the air high above us, condensing into
clouds of raindrops, and dropping back down
to earth as precipitation.