1. Energy Flow in Ecosystems

2. Components of an Ecosystem living and non-living things interact with each other in an ecosystem.living and non-living things interact with each other in an ecosystem. –biomass – –biomass – organic matter that is alive or was once alive

3. Abiotic Factors abiotic – non-living things in an ecosystem vocabulary word!

4. Abiotic Factors The four major abiotic components are: a. climate b. soil, dead material, and rock c. topography d. natural disturbances

5. Abiotic Factors Find the abiotic factors Under your definition, draw some abiotic things.

6. Biotic Factors biotic –living things in an ecosystem vocabulary word!

7. Biotic Factors Biotic factors are anything that is living: a. plants b. animals c. microscopic organisms

8. Biotic Factors Find biotic factors Under your definition, draw some biotic things.

9. Energy Roles Energy enters an ecosystem as sunlight.Energy enters an ecosystem as sunlight. Energy flows through an ecosystem in a cycle.Energy flows through an ecosystem in a cycle. Each organism has a role to play in this energy flowEach organism has a role to play in this energy flow –Producer –Consumer –Decomposer

10. Producers Autotrophs producers - make their own food and are the source of all the energy in an ecosystemproducers - make their own food and are the source of all the energy in an ecosystem AutotrophsAutotrophs –Plants, algae, grass, trees, flowers, bacteria, plankton vocabulary word!

11. Draw a few producers under your definition.

12. Consumers Heterotrophs Consumers - Cannot make their own food. They get their energy from consuming other organisms.Consumers - Cannot make their own food. They get their energy from consuming other organisms. HeterotrophsHeterotrophs –herbivores –carnivores –omnivores vocabulary word!

13. herbivore – eats plants quickly draw an herbivore or two under the definition vocabulary word!

14. carnivore – eats meat quickly draw a carnivore or two under the definition vocabulary word!

15. omnivore – eats plants and meat quickly draw an omnivore or two under the definition vocabulary word!

16. Decomposers and Scavengers decomposers - break down waste and return the raw materials into the soil.decomposers - break down waste and return the raw materials into the soil. Waste and dead organisms must be removed from the environmentWaste and dead organisms must be removed from the environment –Bacteria –Fungi –Carrion eaters like vultures, coyotes, maggots vocabulary word!

17. Decomposers and Scavengers quickly draw an omnivore or two under the definition

18. Food Chains food chain – diagram that shows the flow of energy from one animal to another.food chain – diagram that shows the flow of energy from one animal to another. –first organism in a food chain is always a producer –Next organisms are consumers vocabulary word!

19. Food Chain

20. Quickly cut out the food chain and glue it on your paper under your definition.

21. Food Chains Decomposers can be at any levelDecomposers can be at any level

22. Food Web A food chain just shows one track of energy flowA food chain just shows one track of energy flow food web - consists of many overlapping food chains to show feeding relationships between organisms.food web - consists of many overlapping food chains to show feeding relationships between organisms. Organisms can play more than one role in a food webOrganisms can play more than one role in a food web vocabulary word!

23. Food Web

25. Quickly cut out the food web and glue it on your paper under your definition.

26. Trophic Level Organisms can be divided into trophic levels. producers are at the bottom producers are at the bottom Next are primary consumers Next are primary consumers (herbivores) (herbivores) Secondary consumers (omnivores Secondary consumers (omnivores or carnivores) or carnivores) Tertiary consumers (omnivores or Tertiary consumers (omnivores or carnivores) carnivores)

27. Trophic Level Quickly cut out the trophic pyramid and glue it on your paper.

28. Energy Pyramids energy pyramid - shows the amount of energy that moves from one feeding level to another in a food web.energy pyramid - shows the amount of energy that moves from one feeding level to another in a food web. At each level upward, the amount of energy decreases due to use.At each level upward, the amount of energy decreases due to use. vocabulary word!

29. Energy Pyramids When an organism eats food, it obtains energyWhen an organism eats food, it obtains energy The organism uses some of this energy for living (about 90%)The organism uses some of this energy for living (about 90%) Not all of this energy is available to the next consumer in line (only 10% moves to the next level)Not all of this energy is available to the next consumer in line (only 10% moves to the next level)

30. Energy Pyramids The most energy is available at the producer level.The most energy is available at the producer level. The amount of energy at the producer level determines how many organisms an ecosystem can support.The amount of energy at the producer level determines how many organisms an ecosystem can support. The least amount of energy is available at the third level or tertiary consumer.The least amount of energy is available at the third level or tertiary consumer.

31. Energy Pyramids

32. Quickly cut out the energy pyramid and glue it on your paper under your definition.

33. Cycling of Energy Once an organism dies, decomposers take over and break down the material it was made of.Once an organism dies, decomposers take over and break down the material it was made of. These nutrients are put back into the soil.These nutrients are put back into the soil. Plants then use those nutrients along with sunlight to recycle that energy back into the food chain.Plants then use those nutrients along with sunlight to recycle that energy back into the food chain.

34. Energy flows through an ecosystem in a cycleEnergy flows through an ecosystem in a cycle

35. Click on the link to go to the vocabulary games: http://www.neok12.com/quiz/ECOSYS01 http://www.neok12.com/quiz/ECOSYS02