2. AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem

3. Food chain Food pyramid Food web Food chain Food pyramid Food web AIM: What are Food Chains, Webs and Pyramids?

4. Examine this picture

5. What is this caterpillar doing

6. Examine this picture

7. Now what happened to the caterpillar ?

10. Arrange these organisms as to WHO eats WHO

12. What does the food chain tell us about the relationship of organisms in that food chain? What does the food chain tell us about the flow of energy in the chain?

13. DEFINES: the flow of energy from one animal to another It defines “who” eats “who”

14. What might happen if there were no caterpillars

15. What might happen if there were less mice?

16. WRITE DOWN A FOOD CHAIN IN YOUR NOTEBOOK for hawks, berries, & birds

17. BERRIES

18. BIRDS HAWKS

20. EXAMINE THESE TWO FOOD CHAINS Leaves worms bird berries Squirrels hawks However, do birds only eat worms? What else do birds eat? What else might hawk eat?

21. Does this give MORE detail or LESS detail then the food chain model?

22. A food web shows more interactions of organisms then a food chain!

24. In a FOOD WEB, Green Plants are referred to as … ?

25. In a FOOD WEB, Green Plants are referred to … ?

26. What level consumer are the rabbit, mouse, grasshopper and termite?

28. What level consumer are the the fox, snake, shrew, and bird?

30. Now what level consumer is the mouse?

32. What level is the fox now?

34. What happens to ALL plants and animals after they die?

36. What Animal is this? How many mice does he need to eat per day/week?

38. How many grasshoppers do two mice need to eat per day or per week week?

40. How much grass do those “hoppers” need?

42. What is grass called?

43. What are the “hoppers” called?

44. What are the mice called?

45. What is the hawk called?

47. This in an example of ???

48. FOOD PYRAMID

49. It takes more animals of a lower level to support the level above it

50. As you move up the pyramid, there is less and less energy

51. It take more grass to support a population of “hoppers”

52. It take more hoppers to support a population of mice

53. It take more many mice to support just on hawk!

54. Decreasing Number of Organisms Decreasing Amount of Energy

55. A food pyramid is a model of a food chain Shows the flow of energy Shows the amount of energy in terms of the number of organisms Shows THAT greater populations of organisms are needed at lower levels on the pyramid, to support smaller populations at the top of the pyramid.

56. REVIEW VOCABULARY – AND THE AIM – AND THE OBJECTIVES AIM: What are habitats and niches?

57. Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem Food chain, Food pyramid, Food web Food chain, Food pyramid, Food web

58. Class Activity: Worksheets Word Problems AIM: What are habitats and niches?

59. Homework: INTERNET QUESTIONS Paragraph AIM: What are habitats and niches?