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Cycles of Matter. Recycling Matter Energy cannot be recycled but decreases as it is passed through the ecosystem. Matter is continually recycled in a.

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Presentation on theme: "Cycles of Matter. Recycling Matter Energy cannot be recycled but decreases as it is passed through the ecosystem. Matter is continually recycled in a."— Presentation transcript:

1 Cycles of Matter

2 Recycling Matter Energy cannot be recycled but decreases as it is passed through the ecosystem. Matter is continually recycled in a system. Cycles of Matter –Water –Carbon & Oxygen –Nitrogen

3 Water Cycle Continuous process by which water moves from Earth’s surface to the atmosphere and back. Includes –Evaporation (Liquid  Gas Vapor) –Condensation (Gas Vapor  Liquid) –Precipitation (Liquid falls from clouds)

4 Carbon & Oxygen Cycle Photosynthesis –Producers use carbon dioxide and sunlight to produce glucose (sugar). –Uses carbon dioxide, releases oxygen Respiration –Consumers break down glucose to release energy and carbon dioxide –Uses oxygen, releases carbon dioxide 6CO 2 + 6H 2 O + sunlight & chlorophyll  C 6 H 12 O 6 + 6O 2 6O 2 + C 6 H 12 O 6 --> 6H 2 O + 6CO 2 + energy

5 Carbon & Oxygen Cycle Plant uses carbon dioxide to make sugar molecules. Animal releases carbon dioxide into the air. Animal eats sugar molecule. Plant takes in carbon dioxide.

6 Carbon & Oxygen Cycle Plant uses carbon dioxide to make sugar molecules. Animal releases carbon dioxide into the air. Animal eats sugar molecule. Plant takes in carbon dioxide.

7 Carbon & Oxygen Cycle Plant uses carbon dioxide to make sugar molecules. Animal releases carbon dioxide into the air. Animal eats sugar molecule. Plant takes in carbon dioxide.

8 Carbon & Oxygen Cycle Plant uses carbon dioxide to make sugar molecules. Animal releases carbon dioxide into the air. Animal eats sugar molecule. Plant takes in carbon dioxide.

9 CO 2 in Atmosphere CO 2 in Ocean Section 3-3 Figure 3-13 The Carbon Cycle Carbon & Oxygen Cycle

10 Nitrogen Cycle Nitrogen Gas (Free nitrogen) –Most common form of nitrogen. –Cannot be used by organisms like us that need nitrogen –Must be converted into usable form. Nitrogen Fixation –Process of changing nitrogen gas from the air into nitrogen compounds plants can use. –Performed by bacteria (some live in roots of plants—called nodules) Fixed Nitrogen –Used by organisms to build proteins Decomposers –Break down proteins into nitrogen compounds in soil. –Bacteria further break down nitrogen into nitrogen gas

11 Nitrogen Cycle

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16 Nodules

17 N 2 in Atmosphere NH 3 NO 3 - and NO 2 - Section 3-3 Figure 3-14 The Nitrogen Cycle Nitrogen Cycle

18 Summary Questions Name and define the three major processes that occur during the water cycle. Explain the role of plants in the carbon cycle. Why is nitrogen fixation a necessary part of the nitrogen cycle? Where do nitrogen-fixing bacteria live? Explain how the movement of matter through an ecosystem is different from the movement of energy through an ecosystem.


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