Carbon is a chemical element (when it's pure it's a generally a black powder, or a diamond) which is found cmobined with other elements (mainly Oxygen, Hydrogen and Nitrogen) in all foods and in most of the chemicals that make up our bodies.
When things that contain carbon (e.g. wood, petrol, food) are reacted with oxygen (either by burning them, or in respiration - the chemical reaction that releases energy inside our cells) carbon dioxide is produced, as well as some energy and some water.
Your task is to produce either a PowerPoint presentation or a story-board poster telling the story of the journey of a carbon atom in a cheese sandwhich, into an athlete's digestive system, through their blood stream to a muscle in their leg (while it's part of a glucose molecule), then back to their lungs and out into the air (when it's part of a carbon dioxide molecule).
Use pictures and diagrams to illustrate the key stages in the journey. Include:
- How the food gets into the small intestine.
- How it gets from there into the blood.
- How the blood carries it to the muscle.
- How respiration turns glucose into carbon dioxide.
- How the blood gets back to the lungs.
- How the lungs remove the carbon dioxide from the blood.
Here is a very detailed animation about the digestive system.
This is a helpful animation about the absorbtion of food in the small intestine.
This is a simple animation about the circulatory system.
Here is what Bitesize has to say about respiration.
Here is a labelling activity for the respiratory system.
Here is a helpful animation explaining gas exchange in the lungs.
Explain as many scientific ideas as you can in your own words - don't copy and paste from the internet!
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