Carbon_Cycle1.pptx by carboncarboncarbon
- 1. 1.3 THE CARBON CYCLE
- 2. What Is Carbon? An element: 6 protons, 6 neutrons The basis of life of earth Found in all earth systems
- 3. Carbon Cycle The same carbon atoms are used repeatedly on earth. They cycle between the atmosphere, hydrosphere, geosphere and biosphere.
- 8. Occurence of Carbon Diamond Limestone Coal
- 9. Nitrogen Cycle Water Cycle Oxygen Cycle Carbon Cycle Biogeochemica l Cycle Biogeochemical Cycles
- 10. Utilisation of CO2 Photosynthesis
- 11. Utilisation of CO2 Photosynthesis
- 12. Utilisation of Carbon Food Chain Producers Primary consumer (Herbivores) Secondary consumer (Carnivores)
- 13. Utilisation of Carbon Photosynthesis
- 14. Utilisation of Carbon Photosynthesis
- 15. Replenishment of Carbon Respiration
- 16. Replenishment of Carbon Respiration
- 17. Replenishment of Carbon Combustion
- 18. Replenishment of Carbon Combustion
- 19. Replenishment of Carbon Combustion
- 20. Replenishment of Carbon Combustion Transportation Industries Thermal Plant
- 21. Replenishment of Carbon Decomposition
- 22. Replenishment of Carbon Decomposition
- 23. Replenishment of Carbon Decomposition
- 24. Replenishment of Carbon Decomposition
- 25. Replenishment of Carbon Decomposition
- 26. Carbon Cycle
- 27. What Is Carbon? • Carbon is the chemical backbone of life on Earth. • It is found in all living (organic matter) things on Earth • It can be found in rocks, oceans, atmosphere • Carbon compounds regulate the Earth’s temperature, make up the food that sustains us, and provide energy that fuels our global economy.
- 28. The Carbon Cycle • The same carbon atoms are used repeatedly on earth, cycling between the earth and the atmosphere. • Carbon moves from one storage reservoir to another through a variety of mechanisms.
- 29. Plants and the Carbon Cycle • Plants pull carbon dioxide from the atmosphere into the biosphere, using it to make food through the process of Photosynthesis. • The carbon becomes part of the plant and is stored asStarch in the leaves, stems or roots of the plant. • Thus entering the food chain.
- 30. Animals and the Carbon Cycle • When organisms eat plants, they take in the carbon and some of it becomes part of their own bodies. • All Animals that eat plants digest the sugar molecules to get energy for their bodies. • Respiration, excretion, and decomposition release the carbon back into the atmosphere or soil, continuing the cycle. • When humans consume plants and animals we add to this cycling of matter.
- 31. Plants and Animal Life Cycles •When plants and animals die, most of their bodies are decomposed and carbon atoms are returned to the atmosphere. •Some are not decomposed fully and end up in deposits underground (oil, coal, etc.).
- 32. Carbon and its Return to the Atmosphere Many natural and industrial activities help return carbon into the atmosphere. • Carbon in rocks and underground deposits is released very slowly into the atmosphere a process that takes many years. • The burning of fossil fuels since the start of the industrial revolution has dramatically increased the levels of Carbon in the atmosphere
- 33. Natural combustion Forest and grass fires are a natural, required part of the carbon cycle that release carbon into the atmosphere and geosphere. Fire returns carbon to the soil and “cleans out” unhealthy plants, allowing new plants to grow.
- 34. The Carbon Cycle
- 35. Processes that transfer carbon Between earth systems - Photosynthesis - Respiration - Consumption - Decomposition - Combustion (Burning) - Weathering (rocks break down and release carbon) - Dissolve/Vaporize (Between ocean and atmosphere)
- 36. Carbon in Oceans Largest exchange of carbon in carbon cycle is the dissolving and vaporization of carbon dioxide between the atmosphere and ocean surface.
- 37. Carbon in Our Oceans Additional carbon is stored in the ocean. Many animals pull carbon from water to use in shells, etc. Animals die and carbon substances are deposite at the bottom of the ocean. Oceans contain earth’s largest store of carbon.
- 38. Carbon Cycle Diagram Carbon in Atmosphere Plants use carbon to make food Animals eat plants and take in carbon Plants and animals die Decomposers break down dead things, releasing carbon to atmosphere and soil Bodies not decomposed — after many years, become part of oil or coal deposits Fossil fuels are burned; carbon is returned to atmosphere (Unbalanced) Carbon slowly released from these substances returns to atmosphere
- 39. Balanced Carbon Cycle QuickTime™ and a decompressor are needed to see this picture.
- 40. Unbalanced Cycle - Human Impact Under balanced conditions, fossil fuels release carbon stores very slowly into atmosphere. When humans burn fossil fuels, it releases a tremendous amount of carbon into the atmosphere over a very short time span. Increased carbon dioxide in atmosphere increases global warming Fewer plants mean less CO2 removed from atmosphere
- 42. What is your carbon footprint? A carbon footprint is the amount of carbon emitted into the atmosphere by your personal, day-to-day activities. Examples: Type of car you drive, how far you drive your car, how much electricity you use (electricity primarily comes from burning coal), where the food you buy is grown and airplane flights. Why do we care?? GLOBAL WARMING
- 43. Things you can do to reduce your carbon footprint Promote plant life, especially trees Buy a fuel efficient vehicle Purchase locally grown food Reduce electricity use Reduce how far/much you drive Take less airplane trips Reduce, Reuse, Recycle!
- 44. CFA 1. Why is the carbon in the atmosphere increasing? 2. Of the seven processes that transfer carbon, what is the only one that reduces the carbon in the atmosphere? 3. Why are we worried about the amount of carbon in the atmosphere?