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General Physics Science Fair Project

Diffusing Helium in Balloons

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Diffusing Helium in Balloons | Science Fair Projects | STEM Projects
Have you ever wondered how air pressure affects the diffusion of helium gas in balloons? Let's find out! We'll measure the diameter of the balloons on different levels of a tall building to see how the air pressure affects the rate at which helium gas escapes.

Hypothesis

The hypothesis is that lower air pressure in the surroundings will cause helium gas to escape at a faster rate, from a balloon.

Method & Materials

You will inflate balloons with helium gas, measure their diameter, and observe how the helium gas escapes from the balloons in different air pressures.
You will need 60 balloons, a tank of helium gas, a 500mm ruler and 2 wooden blocks, 60 nails, and 100m of string.

Results

The experiment results show that the balloons on the highest floor reduce in size and diameter at a faster rate than the balloons on the ground floor. This means that the helium gas escapes more quickly from the balloons located on the highest floor.

Why do this project?

This science project is interesting because it shows how air pressure affects the diffusion of helium gas in balloons.

Also Consider

Consider experimenting with different types of gases and varying the room temperature and humidity levels.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!
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