Bug In A Jar Experiment

Question 1

Explanation of the movement of the coloured droplet

Answer 1

Carbon Dioxide Absorption: As the bug respires, it produces carbon dioxide. The filter absorbs this CO₂, reducing the gas concentration in the jar.
Pressure Change: This absorption creates a partial vacuum (lower pressure) in the jar. The colored water is pulled into the tube due to the pressure difference.
Diffusion: The movement of gases and liquids occurs due to diffusion and pressure gradients. The colored droplet moves towards the area of lower pressure.