2. Energy Flow and Matter Cycles adapted by ccps.k12.va.us

3. Objectives Discuss energy flow through different ecosystems Trace cycles of Carbon, Nitrogen, and water

4. Ecosystem All the energetic interactions and material cycling that link organisms in a community with one another and with their environment

5. Energy and Production

6. Laws of Thermodynamics Energy is not created or destroyed. It changes form and place When energy changes form some of it is lost as heat

7. Photosynthesis

8. Chemosynthesis

9. Compare and Contrast

10. Food Chains and Food Webs

11. Definitions Food Chain– series of steps by which energy stored in plants is passed through an ecosystem Fig. 5.14

12. Components Producers – plants Herbivores – convert plant tissue into animal tissue Carnivores – eat other animals, levels Omnivores – eats both plants and animals

13. Components Scavengers – animals that eat dead plant and animal matter Saprophytes – plant and fungi that absorb dead material Decomposers – everything is a decomposer

14. Matter Cycles

15. Law of Conservation of Mass

16. Water Cycle http://www.ndhealth.gov/wq/sw/z1_nps/images/H2O_cycle.gif

17. Carbon Cycle Fig 5.16

18. Carbon Cycle http://eo.ucar.edu/kids/green/cycles6.htm

19. Nitrogen cycle Fig. 5.17

20. Nitrogen cycle http://www.realtrees4kids.org/sixeight/cycles.htm

21. ► Compare and Contrast: Water vs. Carbon and Nitrogen vs. Carbon ► How are all of these cycles alike? ► How does water, carbon and nitrogen enter into the earth’s atmosphere? ► How does water, carbon and nitrogen leave the earth’s atmosphere? ► Where are each of these stored? ► Predict: If fuels are burned and released into the atmosphere, how does carbon dioxide effect plant growth? ► What are 3 forms of water in the water cycle?