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3.3 Cycles of Matter

3.3 Cycles of Matter. Objectives. Describe how matter cycles among the living and nonliving parts of an ecosystem. --------------------------------------------------------------------------- Explain why nutrients are important in living systems.

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3.3 Cycles of Matter

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  1. 3.3 Cycles of Matter

  2. Objectives • Describe how matter cycles among the living and nonliving parts of an ecosystem. --------------------------------------------------------------------------- • Explain why nutrients are important in living systems. • Describe how the availability of nutrients affects the productivity of ecosystems.

  3. So Far… • We’ve talked about biotic factors of ecosystems…today and tomorrow were going to talk about abiotic factors… • What are biotic factors? • What are abiotic factors?

  4. What are the three most important things you need in order to live??? • I once asked this question…

  5. What are the three most important things you need in order to live??? O2

  6. The Water Cycle • All living things need water to survive.

  7. The Water Cycle Where does the water come from???

  8. The Water Cycle • Water moves between the ocean, atmosphere, and land through a process called the water cycle. • Evaporation – water changes from liquid to gas. • Transpiration – water evaporates from leaves. • Condensation – water changes from gas to liquid and becomes a cloud. • Precipitation – rain, snow, sleet, or hail. • Can fall into rivers and be carried to oceans • Seep into soil and sucked up by plant roots or become ground water. http://earthguide. ucsd.edu/earthguide/diagrams /watercycle/

  9. Assignment - Requirements • Create a comic strip about a “drop” of water that goes through the water cycle. • The “drop must completely go through the water cycle and hit all seven stages on the diagram on page 75. • Evaporation • Transpiration • Condensation • Precipitation • Runoff • Seepage • Root uptake • Underline the seven words used. • Can be in color…more points given for color!!! Due Friday!!!

  10. Assignment • Your comic should CAN BE FUNNY AND ORIGINAL!!! • Have your droplet go through sewers, drains, oceans, toilets, whatever you want it to go through. • Give your water human characteristics such as the ability to talk, facial features, hair, clothes, weapons, anything.

  11. Objectives • Describe how matter cycles among the living and nonliving parts of an ecosystem. --------------------------------------------------------------------------- • Explain why nutrients are important in living systems. • Describe how the availability of nutrients affects the productivity of ecosystems.

  12. Review • What is the autotroph in the following food web?

  13. Review What is the autotroph in the following food web? Identify a herbivore in this food web. Identify a carnivore in this food web. Identify a omnivore in this food web.

  14. Review • What is the shared role of the bacteria, daphnia, and centipede in this food web?

  15. Review • I’ll give you the definition, you give me the word: • The process of going from a liquid to an atmospheric gas. • Examples include rain, sleet, hail, and snow. • Evaporation from the leaves of plants. • The process of water vapor becoming a cloud.

  16. Nutrient Cycles • Nutrients – chemical substances an organism needs to sustain life. • WITHOUT NUTRIENTS YOU WOULDN’T BE ABLE TO CREATE TISSUE (grow) OR CARRY OUT ESSENTIAL LIFE FUNCTIONS. Three Key Nutrients: Carbon Nitrogen Phosphorous

  17. The Carbon Cycle (pg. 77) • Carbon has many roles: • Key ingredient in living tissue. • Forms CO Four Process That Move Carbon: • Biological process (photosynthesis & respiration) • Geochemical processes (volcanic eruptions) • Burial and decomposition of dead organisms (or creation of fossil fuel). • Human activities (burning fossil fuels, burning forests)

  18. The Nitrogen Cycle (pg. 78) • All organisms need nitrogen to create proteins. Pop Quiz

  19. The Nitrogen Cycle (pg. 78) • All organisms need nitrogen to create proteins. • Nitrogen fixation – process of converting nitrogen gas into usable nitrogen in the soil. • Done by special bacteria that live in special roots called legumes. • Denitrification – process of converting usable nitrogen into nitrogen gas. • Done by plants that take up nitrogen in soil. More Pop Quiz

  20. The Phosphorus Cycle (pg. 79) • Essential to living organisms because it forms DNA. • Stays in rocks, soils, and dissolved in water. • Plants then absorb the usable phosphorus.

  21. Nutrient Limitation • Sometimes an ecosystem can be lacking in one nutrient, and be unable to support life. • Limiting nutrient – ecosystem is limited by a single nutrient that is scarce.

  22. Closure • Water cycle • Carbon cycle • Nitrogen cycle • Phosphorous cycle • Nutrient Limitation • QUIZ TOMORROW!!!

  23. Assignment • To help prepare you for your quiz: • Pg. 73 1-5 • Pg. 80 1-5

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