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  1. Benchmark: SC.8.L.18.4  Cite evidence that living systems follow the laws of Conservation of Mass and Energy

  2. Carbon is the basis of compounds found in all living organisms. Look at the diagram of the carbon cycle below. Which of the following biological principles does the diagram best exemplify? • Law of Universal Gravitation. • Law of Conservation of Mass.* • Law of Superposition. • Law of Motion.

  3. Bellringer #2: 2 minutes! • Carbon cycles through various materials here on Earth. Carbon is found in organisms that die and are broken down by microorganisms. These microorganisms put the carbon back in to the environment. Which of the following processes describes how the carbon changes into a gas and reenters the atmosphere? (SC.8.L.18.4) • Combustion • Photosynthesis • Respiration* • sedimentation

  4. BrainPop Video (4 minutes) BrainPop – Carbon Cycle

  5. What is Carbon? • An element • The basis of life of earth • Present in ALL living things. • Found in rocks, oceans, atmosphere

  6. How plants, animals and rocks are involved in the carbon cycle • Plants: • Plants pull carbon dioxide from the atmosphere and use it to make food through the process of photosynthesis. • The carbon becomes part of the plant stored food • Animals: • Eat plants they take in the carbon and some of it becomes part of their own bodies. • Through respiration, animals release carbon back into the atmosphere. • 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.). • Carbon in rocks and underground deposits: • is released very slowly into the atmosphere.

  7. The Carbon Cycle

  8. The CARBON CYCLE Right Side Left Side Vocabulary: Photosynthesis: Respiration: Decomposition: Fossil fuels: Organic material: 1 3 4 2 4 4 5 Fill in the diagram with the correct process at each number: Word Bank: photosynthesis, respiration, decomposition, pumping, burning

  9. ExtensionPlay the Carbon Cycle Game!

  10. What is the importance of plants in the carbon cycle? • How many possible paths are there for a carbon atom to move through the environment? • What happens to the carbon atom as it moves from 1 pool to another? Give an example. • Name some places where carbon appears to “get stuck” in a pool and not move for some time. Why might this be? • Humans have a big influence on the carbon cycle. What would the carbon cycle be like without humans? What is our impact on the carbon cycle?