1. Compare and contrast matter and energy
QOD

2. A food chain is a one way transfer of energy
e.g., plant to insect to mouse to snake to bird, etc…
The different steps or links in a food chain are called trophic levels.
Trophic level: a step in a food chain or food web.

3. Since producers capture energy and create organic material, they are on the 1st trophic level. However, not all of the energy captured by a producer is available to consumers at the higher trophic levels. Some of the energy is used up in the metabolic activities of the producer (respiration, growth, etc…) and leaves the ecosystem as heat.

4. Ecologists call this organic material biomass.
Only the energy that is stored in organic material (leaves, seeds, fruits, stems, etc.) can be used by other organisms.
Ecologists call this organic material biomass.
Biomass: organic material that can be used as food.

5. How much energy is lost as it moves through a food chain from lower to higher trophic levels?
10% RULE:
90% of energy is used and lost as heat
10% is stored in biomass
Energy is lost as it moves through a food chain

6. Because only 10 percent of the energy at one trophic level can move up to the next trophic level; there tends to be more biomass at lower trophic levels than at higher levels.
(i.e., more grass than mice, more mice than snakes, more snakes than hawks, etc…)

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Food Web
What do the arrows show?
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Energy Pyramid
Shaped like a pyramid because there is less energy at each level: Ten Percent Rule
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Biomass Pyramid
Shows the actual mass of organisms at each trophic level
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Pyramid of Numbers
Shows the number of individual organisms at each trophic level
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11. Food Chain Game
Start a new page in your notebook titled “Food Chain Game”
Paste analysis question sheet in now
Question 1 will be completed as homework

12. Food Chain Game You will be either a grasshopper, a frog, or a hawk.
Popcorn will represent producers
Grasshoppers try to eat popcorn plants by putting popcorn in your “stomach’ bag
Frogs will eat grasshoppers by tagging them and taking their stomach bag (grasshopper leaves game)
Hawks will eat frogs by tagging them and taking the frogs stomach (frog leaves game)
Each round will last 5 minute or until all animals are eaten

13. Objective Create a balanced food chain!
To survive, a grasshoppers stomach must be filled to the bottom of the tape, a frog must have 3 grasshopper stomachs, and a hawk must have at least one full frog stomach
Animals with less than a full stomach at the end of the round is considered “starved to death”
At least 2 grasshoppers, 2 frogs, and 1 hawk must be alive at the end of the round to produce a sustainable ecosystem

14. Food Chain Game First round= everyone split up evenly between groups
After that you modify conditions to create balanced food chain
READY!?

15. What are trophic levels
What are trophic levels? Are there any limits to how many trophic levels can exist in a given food chain? Why/why not?

16. Title and Content Layout with Chart

17. Two Content Layout with Table
First bullet point here
Second bullet point here
Third bullet point here
Class
Group 1
Group 2
Class 1 82 95
Class 2 76 88
Class 3 84 90

18. Two Content Layout with SmartArt
First bullet point here
Second bullet point here
Third bullet point here
Task 1
Task 2
Task 3

19. Add a Slide Title - 1

20. Add a Slide Title - 2

21. Add a Slide Title - 3

23. Add a Slide Title - 4

24. Add a Slide Title - 5