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Carbon and nitrogen cycling


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Carbon and nitrogen cycling

  1. 1. Carbon and Nitrogen Cycling
  2. 2. What is a carbon atom? <ul><li>#6 on the periodic table. It’s symbol is “C”. </li></ul><ul><li>All living organisms are based on the carbon atom. </li></ul><ul><li>Carbon atoms continually move through living organisms, the oceans, the atmosphere, and the crust of the planet. </li></ul>
  3. 4. What are the basics of the carbon cycle? <ul><li>Plants use carbon dioxide, water, and sunlight to make sugar molecules and oxygen. </li></ul><ul><li>Animals take in oxygen and break down sugar molecules releasing energy, carbon dioxide, and water. </li></ul>
  4. 5. Simple picture
  5. 6. How do plants do it? <ul><li>Photosynthesis! </li></ul><ul><ul><li>The process by which producers use the energy from sunlight to produce sugar, which consumers convert to &quot;fuel“. </li></ul></ul><ul><ul><li>6H 2 O + 6CO 2 ----------> C 6 H 12 O 6 + 6O 2 </li></ul></ul><ul><ul><li>6 molecules of water + 6 molecules of carbon dioxide = 1 molecule of sugar + 6 molecules of oxygen </li></ul></ul>
  6. 7. What happens when plants can’t absorb all the carbon we produce? <ul><li>Carbon builds up in our atmosphere and oceans. This may be a cause of Global Warming. </li></ul><ul><li>Global Warming (Green house gases) </li></ul><ul><li>Results (Green house gas results) </li></ul><ul><li>OCEANS (Bill Nye – the sink effect) </li></ul>
  7. 8. Carbon Cycle Summary <ul><li>Summarize the Carbon Cycle. </li></ul><ul><li>Name two things you can do to lower the amount of Carbon in the atmosphere. </li></ul>
  8. 9. Nitrogen Atoms <ul><li>All life requires nitrogen. (protein and DNA are just a few uses) </li></ul><ul><li>Air is 79% nitrogen gas (N 2 ). </li></ul><ul><li>Nitrogen Cycle Movie </li></ul>
  9. 10. Nitrogen Cycling Basics <ul><li>Most organisms cannot use nitrogen in the form N 2 or “Free Nitrogen”. </li></ul><ul><li>It must be combined with other molecules or “Fixed”. </li></ul><ul><li>This is done by bacteria who live in “nodules” on plant roots. </li></ul><ul><ul><li>This is an example of mutualism! </li></ul></ul><ul><li>Lightning also fixes Nitrogen. </li></ul>
  10. 11. Simple Picture
  11. 12. Remember…… <ul><li>Water, Carbon, and Nitrogen are all necessary to living things. </li></ul><ul><li>All three are types of matter. </li></ul><ul><li>All three are constantly being cycled through producers, consumers, decomposers, and the environment. </li></ul>