Here follow my instructions for the cloud in the bottle experiment. This one me and my kids tried several times before we understood that we had succeeded. First, we thought that we were too fast to drop down the matches, and did not get enough smoke into the bottle. But that was not the case, the magic happened when we added pressure to the bottle!
Parental supervision is a must since the experiment involves matches and fire!
Remember to start the experiment with a hypothesis, what do you think will happen?
Instructions for parents: Read this first.
In order for the cloud to be formed, some things are required. Firstly, there must be water in the air (water vapor), then the air must be cooled and finally the steam must have the help of small particles to “condense” – become water droplets.
When you shake the bottle, the air humidity increases in the bottle, and there will be more water vapor in the air. By pouring some smoke into the bottle, the necessary particles that help water vapor is added. Then we need to cool the air – this is done when we press the compressed bottle -> lower pressure = lower temperature.
To see others do the experiment look at this video:
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Do you have any questions or comments about the experiment? Just leave a comment below!