Can you make a closed system?


Your task is to plan and make a closed system. Look at these pictures below and while some of them are terrariums which are not closed they should give you the general idea.

Some links to get you in the mood

This image from Paula Hayes, click on the picture for her website - very pretty

A commercial link

A terrarium in a wine bottle

moss-age in a bottle

Paula Hayes' terrarium gallery

Of course YouTube has some stuff

Some ideas for your write up

  • What will need to be considered to create a closed system? Think of both biotic and abiotic factors.
  • What materials will need to be circulating around your closed system?
  • What external factors will need to be considered
  • What species will you be using in your closed system?
  • What food chains will exist?
  • Can you look at a food web of your system?
  • What equipment will you need?
  • How will you measure the success of your system?
  • What natural closed systems can you compare yours too. Is there anything you could learn from these natural systems?
  • What observations will you need to take? How will you record these?


Year 12 - Plan handed in before Carnival break
Year 13 - I should already have it!!!!!