Information about Make your own biosphere with Fizzics Education | Kids Science Experiments

Make your own biosphere

Make your own biosphere

Follow FizzicsEd 150 Science Experiments:

You will need:

A clean, transparent 2L PET bottle





Charcoal fragments

Small plants

Make your own biosphere science experiment - materials needed
1 Make your own biosphere science experiment - cutting the PET bottle

Cut the top off the PET bottle using scissors or a sharp knife.

2 Make your own biosphere science experiment - pouring in pebbles

Add a layer (about 1 cm deep) of charcoal, followed by a layer of pebbles (about 2 cm deep) and a layer of soil (about 5 cm deep).


Stick some holes in the soil and add some small plants. You could also add a layer of moss. Tape the top of the bottle back on.


Place your mini biosphere in direct sunlight and water occasionally but not too often – the water in the container should evaporate and condense on the sides of the container, creating its own water cycle.

The biosphere is a closed ecosystem...

…you just need to add sunlight and some water. The charcoal acts as a filter, purifying the water as it cycles through the system. You can also create an aquarium in a PET bottle, with water plants, rocks and some water from your local creek.

Learn more!

Teaching about sustainability? From Plants for Life to Renewable energy, we’ve got your unit covered!
Get in touch with FizzicsEd to find out how we can work with your class.


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