2. The Carbon Cycle. By James Burrows, Nadia Molinero, Emilie Vanness and Tatijana Vujicic.

3.  A chemical element  Symbol “C” and atomic number 6, part of group 14 on the Periodic Table.  Non-metal and *tetravalent, only allowing 4 electrons to form chemical bonds with it.  Found in 2 major forms; diamond and graphite  Found impurely in charcoal, soot and coal.  Fourth most abundant element in the universe.  Every organism on Earth needs carbon for either structure or energy  Found in forms such as gas carbon dioxide, to solids like limestone, wood and plastic *Tetravalent: having a valence of four What is Carbon?

4.  The sun  The stars  Comets  Atmospheres of most planets  Nearly every single living thing Where is Carbon Found?

5. PoolsAmount in billions of metric tons. Atmosphere578 (in 1700) – 766 (in 1999) Soil Organic Matter1500 - 1600 Fossil Fuel Deposits4000 Ocean38,000 – 40,000 Marine Sediments and Sedimentary Rocks 66,000,000 – 100,000,000 Terrestrial Plants540 - 610 Carbon Pools Carbon is stored in the following major pools; -Organic molecules in living or dead organisms -Carbon dioxide -Organic matter in soils -Fossil fuels and sedimentary rock deposits -Dissolved atmospheric carbon dioxide

6. What is the Carbon Cycle?  Biogeochemical processes where carbon is subjected to chemical reactions  Organic circulation of carbon from the atmosphere, into organisms and back  Moves through the atmosphere, oceans, water, living things, soil and geological deposits.  Changes form and moves through different reservoirs

7. The Carbon Cycle Carbon Cycle. Carbon is interchanged between active pools due to differing processes; Photosynthesis and respiration between the land and the atmosphere, and diffusion between the ocean and the atmosphere.

8.  Biology plays an important role in movement of carbon between land, air, and ocean.  Multicellular life depends on production of sugars from sunlight and CO2.  Plants take in carbon dioxide and use sunlight to convert it to sugars and oxygen  When animals eat the plants, they acquire the carbon that was stored there Biological Carbon Cycle

9. Geological Carbon Cycle  Component of the cycle that interacts with rock cycle  Carbonic acid forms by reaction with atmospheric carbon dioxide and water  Acidic rain reaches the Earth’s surface, and reacts with minerals  Through deposition and burial, calcite sediment forms limestone

10.  Odorless gas produced by burning carbon  Naturally present in the air  Absorbed by plants during photosynthesis. Carbon Dioxide. Produced by… *Volcanoes *Respiration *Burning fossil fuels *Decaying animals * burning rain forests *Cars

11.  Significantly altering the natural carbon cycle  Burning of fossil fuels and deforestation increases CO2  Releases carbon faster than its being removed, causes an imbalance and CO2 concentrations to increase  Carbon dioxide increases atmospheres ability to hold heat, also known as greenhouse gases. Human Alteration of the Carbon Cycle.

12.  http://lesson- plans.theteacherscorner.net/science/experiments/rais ins.php http://lesson- plans.theteacherscorner.net/science/experiments/rais ins.php  http://www.vtaide.com/png/carbonCycle.htm http://www.vtaide.com/png/carbonCycle.htm  http://www.visionlearning.com/library/module_viewe r.php?mid=95 http://www.visionlearning.com/library/module_viewe r.php?mid=95  http://users.rcn.com/jkimball.ma.ultranet/BiologyPage s/C/CarbonCycle.html http://users.rcn.com/jkimball.ma.ultranet/BiologyPage s/C/CarbonCycle.html  http://library.thinkquest.org/11226/why.htm http://library.thinkquest.org/11226/why.htm Sites

13. The End

14. We’ve put together an experiment that you can do, so you can see carbon dioxide in motion. Experiment