How to make Oxygen Cycle Project Model For School Science Exhibition


Oxygen cycle is defined as the circulation in various forms through nature. Oxygen cycle is always interconnected with carbon cycle.

Oxygen Cycle Project Model For School Science Exhibition
oxygen cycle model

The oxygen cycle has four main reservoirs atmosphere, inner crust of the earth, hydrosphere and lithosphere. The critical factor that runs the oxygen cycle is the process of photosynthesis, which leads to the earth’s atmosphere ad existence of life on earth in its current form.

The start of the oxygen cycle is with the plants that absorb energy from sunlight and carbon dioxide to release oxygen into the atmosphere.

In this video, we are going to show a simple 3D model of the oxygen cycle project model for science exhibition using very simple materials that are easily available at home for class 9 students.

Materials Used:

  1. Cardboard
  2. White chart sheet
  3. Thick Yellow sheet
  4. Scissors
  5. White paper – A4 size
  6. Liquid glue
  7. Hot glue gun
  8. Thick sheet
  9. Coloured paper – Red (1), green (4)
  10. Toy animals and humans

You use the resource/tools page section to find the tips where you can buy these materials used at a reasonable cost.

Detailed Video Show How To Make Oxygen Cycle Project Model For School Science Exhibition

Questions and Answers:

  1. What are the reservoirs of oxygen cycle?

       A. The four main reservoirs of oxygen cycle are atmosphere, biosphere, hydrosphere and lithosphere. Among all the reservoirs, lithosphere has the highest volume of oxygen.

        2. What are the two processes that are part of the oxygen cycle?

        A. The two processes that are part of the oxygen cycle are respiration and photosynthesis. Photosynthesis is the process in which the plants release oxygen using carbon dioxide, sunlight and water. Perspiration is defined are the process of human inhaling and exhaling.

        3. What is photosynthesis?

        A. Plants are the main source of oxygen in the atmosphere. Plants absorb the sunlight, carbon dioxide and water to create energy. This results in release of oxygen into the air. This complete process is called as photosynthesis.

        4. Why is oxygen cycle important?

        A. Oxygen cycle is important because it generates oxygen that is very crucial to the earth’s atmosphere and existence of life on earth.


Oxygen is the most important element for life to exist on earth. The carbon dioxide is absorbed by the leaf, which releases oxygen into the atmosphere/air. The plants also release the excess water that it doesn’t need.

All living beings, humans and animals, breathe through the process of respiration, where in oxygen is breathed in and carbon dioxide is released (which is again helpful for the plants growth). Various other processes that use oxygen are fire and rusting.

When metal objects rust, we say they are oxidized. This happens because of the oxygen that is used up by the metal.

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