cart Shopping Cart cart(0)

Make your own biosphere

You will need:

  • A clean, transparent 2L PET bottle
  • Scissors
  • Stickytape
  • Soil
  • Pebbles
  • Charcoal fragments
  • Small plants


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

2. 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).

3. 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.
4. 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.
Be Amazing Book Front Cover; Ben Newsome, teacher & founder of Fizzics Education. Be Amazing -how to teach science the way primary kids love
Be Amazing!
How to teach science, the way primary kids love

Read more about Be Amazing

The biosphere is a closed ecosystem... 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.

Join our newsletter for more science teaching thoughts & ideas

Join the Fizzics newsletter

>100 Free Science Experiments on this site!

Coloured shadows
  • Experiments to colour your class!
  • Easy & fun
read more
skeleton and student
  • Make fake blood & more!
  • Biology made simple
read more
electricity experiments
  • Circuit science for kids
  • Cheap materials found easily
read more
Vortex rings made with fog
  • Experiments using Newton's Laws
  • Step by step science
read more

School Science Visits: 

  • Highly engaging & curriculum-linked
  • Additional Teacher Support Resources
  • Professional visits in-class or via video conference
  • Both Primary School & High School science incursions
Call 1300 856 828 or use this form to discuss or make a show booking for your school!

Email updates

Signup to our fortnightly email Learn more

Contact us

1300 856 828

Unit 10/55 Fourth Ave
Blacktown, NSW 2148, Australia
linkedin-icon youtube-icon   pinterest-icon