What is Energy?

1. What is Energy?

2. What is Energy? Energy is the capacity for action/doing work

3. Why do we eat?

4. Why do we eat? • To have the capacity to carry out functions necessary for living

5. Why do we eat? • To have the capacity to carry out functions necessary for living • So our bodies are able to work

6. Why do we eat? • To have the capacity to carry out functions necessary for living • So our bodies are able to work • To obtain energy

7. How does energy move to our homes?

8. How does energy move to our homes? • Through a chain/web/network of power lines

9. How does energy flow through an ecosystem?

10. How does energy flow through an ecosystem? • Energy flows through food chains or food webs

11. A. Food Chain

12. A. Food Chain 1. A series of events in which one organism eats another and obtains energy

13. B. Food Web

14. B. Food Web 1. Pattern of overlapping food chains in an ecosystem

15. B. Food Web 1. Pattern of overlapping food chains in an ecosystem

16. C. Energy Roles in Food Webs

17. C. Energy Roles in Food Webs 1. Producers

18. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food

19. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers

20. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms.

21. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores –

22. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only

23. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores

24. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only

25. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores

26. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals

27. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals d. Scavenger

28. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals d. Scavenger – carnivore that feed on bodies of dead organisms

29. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals d. Scavenger – carnivore that feed on bodies of dead organisms 3. Decomposers

30. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals d. Scavenger – carnivore that feed on bodies of dead organisms 3. Decomposers – break down waste and dead organisms and return raw materials to the ecosystem

31. D. Energy Pyramid

32. D. Energy Pyramid • 1. Diagram that shows the amount of energy flowing through a food web

33. D. Energy Pyramid • 1. Diagram that shows the amount of energy flowing through a food web

34. D. Energy Pyramid • 1. Diagram that shows the amount of energy flowing through a food web • a. Only about 10% of total energy at each level is passed onto the next level

35. D. Energy Pyramid • 1. Diagram that shows the amount of energy flowing through a food web • a. Only about 10% of total energy at each level is passed onto the next level • 1. organisms use 90% of the energy they consume to carry out life functions