Energy+Pyramid+2

http://www.harcourtschool.com/activity/science_up_close/314/deploy/interface.html

This is a matching activity. Match the questions to the set of facts that answer the questions. The facts are group by letter. (Don't write the facts.) Write the question after the appropriate letter. The appropriate letter is the one that has the facts that answers the question.

In other words:

Write the letters A,B,C,D,E,F,G,&H on your paper separated by two blank lines between each letter. Match each question to a group of facts. Once you have determined which group of facts a question goes with, write the question behind the correct letter.

Questions: (Don’t write the material in the parenthesis. This information will help you match questions to facts.)

-What two concepts tell the structure of the energy pyramid? (Look for two concepts in the facts that indicate a structure or form.)

-By what process does energy enter the energy pyramid? (Look for a process that puts energy into the bottom of the pyramid.)

-What happens to the amount of energy going up the energy pyramid? (Look for energy amounts being mentioned.)

-How does the decrease in energy influence the amount of biomass in the pyramid?

-What are the levels or groups of organisms that make up the energy pyramid? (Look for terms that are levels of organisms.)

-What is the relationship between animals and plants in the energy pyramid? (Look for how plants and animals function differently in the energy pyramid.)

-How does energy pass organism to organism up the energy pyramid? (Look for specific organisms.)

-How do calories show how energy changes moving up the energy pyramid? (Look for the facts that talk about calories.)

Facts:

1. The “Energy Pyramid” is a model of how energy flows in an ecosystem. (An “Energy Pyramid” represents the energy in a food web.)

A. 2. In a food chain organism are organized by what they eat. 3. Producers are at the bottom of the food chain. 4. Producers are eaten by primary consumers called herbivores. 5. Primary consumers are eaten by secondary consumers called carnivores. 6. Animals that don’t have any natural enemies are at the top of the food chain. 7. Decomposers breakdown dead animals and plants recycling nutrients back into the ecosystem.

B. 8. Food chains usually combine to form food webs 9. Food webs are made of many connected and overlapping food chains.

C. 10. Why do animals eat in the first place? 11. Animals eat to get energy. 12. Producers create all the usable energy in an ecosystem. D. 13. Photosynthesis is a process only done by producers. 14. The process of photosynthesis to converts light energy into chemical energy. 15. Chemical energy produced by photosynthesis is called glucose. 16. Glucose is the fuel that drives all living organisms. 17. Plants mostly use glucose to grow and reproduce. Directions: Write A, B, C, D, E, F, & G on a page with two lines between each letter.

E. 18. A small bit of energy is stored in the bodies of plants. 19. When a rabbit eats a plant it only gets a small bit of energy. 20. The rabbit uses up most of the energy gotten from plants to stay alive. 21. When a fox eats a rabbit it gets an even smaller bit of energy originally produced by the plants. 22. All of the energy in an ecosystem ultimately comes from the sun.

F. 23. Because the amount of energy decrease as it travels up a food chain, the energy can be represented as a pyramid. 24. In general, each level in the pyramid gets 10 times less energy than the level below it.

G. 25. A square meter of forest produces 10,000 calories. 26. A herbivore consumes those 10, 000 calories and burn 9,000 and stores 1,000 in their bodies. 27. The square meter of forest only produces 1,000 calories for the predators. 28. With only 1,000 calories available there are going to be way fewer predators than primary consumers. 29. The primary consumers use up 900 calories and store only 100 in their bodies. 30. One square meter of forest only produces 100 calories for the top predators. 31. Because the top predators have a limited number of calories to live on, the ecosystem can’t support that many of them.

H. 32. As energy decreases going up the food chain, so does biomass. 33. Biomass is the combined mass of all the organisms. 34. A small meadow may only support 10,000 grass hopers, 100 snakes and only 1 hawk. (This energy decrease going up makes a pyramid if drawn graphically.)