3.4_assessment.docx - 3.4 Assessment 1 Identify Main Ideas What is the role of the hydrologic cycle in relation to the carbon nitrogen and phosphorus

# 3.4_assessment.docx - 3.4 Assessment 1 Identify Main Ideas...

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3.4 Assessment 1. Identify Main Ideas What is the role of the hydrologic cycle in relation to the carbon, nitrogen, and phosphorus cycles? 2. Summarize Describe at least one way humans impact each of the following cycles: hydrologic, carbon, nitrogen, and phosphorus. SCIENCE AND ENGINEERING 3. Using Math There are about 11,200,000 billion metric tons of O2 in the atmosphere. Based on an estimated photosynthesis rate of 600 billion metric tons per year, how many years might it have taken to reach current O2 levels? (Note: Assume for this exercise that the rate of O2 production is constant even though it has changed over time.) SCIENCE AND ENGINEERING 4. Developing Models Create a simplified model to illustrate the role of photosynthesis and cellular respiration in the cycling of carbon. Include how carbon cycles through the biosphere, atmosphere, hydrosphere, and geosphere. CROSSCUTTING CONCEPTS 5. Energy and Matter How is matter conserved in the nutrient cycles? 3.4 Assessment 1. Identify Main Ideas

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• Spring '14
• PhillipT.Kolbe

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