• an adult helper!
• a clear plastic 2-litre bottle
• water
• matches

1. Pour 2 inches of warm tap water into the bottle.
2. Light a match and let it burn for 2 seconds before blowing it out.
3. Let as much smoke as possible drift into the bottle before putting the cap on tightly.
4. Shake the bottle for one minute.
5. Squeeze the bottle hard for a few seconds, then release your squeeze. Do it again until a cloud forms.

When do you see the cloud appear?

While squeezing
After releasing the bottle
Opening the cap

  view results