1. Energy Flow through an Ecosystem
Photosynthesis,
Food Chains,
Food Webs, &
Energy Pyramids

2. Organisms that can make glucose during photosynthesis
Producers
Organisms that can make glucose during photosynthesis

3. Plants use ___________ they receive from the sun & convert it to
radiant energy
Plants use ___________ they receive from the sun & convert it to
______________
in a process called
____________.
chemical energy
photosynthesis

4. 6CO2 + 6H2O + sunlight & chlorophyll C6H12O6 + 6O2

5. Producers use most of the energy they make for ___________.
themselves

6. The energy that is not used by producers can be passed on to organisms that cannot make their own energy.

7. Organisms that cannot make their own energy
Consumers
Organisms that cannot make their own energy

8. A consumer that eats producers to get energy:
Is called a (primary) or
___________________
first order consumer

9. Most of the energy the primary consumer gets from the producer is used by the consumer. Some energy is stored and can be passed on.

10. A consumer that eats another consumer for energy:
Is called a __________ or second order consumer
secondary

11. Most of the energy the secondary consumer gets from the primary consumer is used by the secondary consumer. Some energy is stored and can be passed on.

12. A consumer that eats a consumer that already ate a consumer:
Is called a 3rd order
or __________ consumer
tertiary

13. Types of Consumers: Herbivore Omnivores Carnivore Decomposer
Organism that cannot make its own food so it consumes plants.
Organism that cannot make its own food so it consumes plants and animals.
Organism that cannot make its own food so it consumes other animals.
Organism that breaks down dead plants and animals to recycle nutrients in the environment.
Herbivore
Omnivores
Carnivore
Decomposer
Think of examples for each type of consumer!

14. Consumers that eat other dead consumers are called ________
scavengers

15. Food Chain
The transfer of energy from the sun to producer to primary consumer then to higher order consumers

16. Label the parts of this food chain:
Radiant
Energy
Tertiary
Consumer
Producer
Secondary
Consumer
Primary
Consumer

17. More Food Chains

18. Another way of showing the transfer of energy in an ecosystem
Energy Pyramid
Another way of showing the transfer of energy in an ecosystem

19. Food Chains Show Available Energy

20. Energy Pyramids Show
It takes a large number of producers to support a small number of primary consumers
It takes a large number of primary consumers to support a small number of secondary consumers
Energy is transferred up the food pyramid

22. Food Webs
Interconnected food chains
They show the feeding relationships in an ecosystem

23. What do the arrows represent?
Energy transfer from organism to organism in the food web

24. How are food webs limited models?
Food webs do not include all parts (animals and resources) of an ecosystem.

25. How Many Chains are in this web?

26. Identify the Producers, Consumers, & Decomposers:

27. Now let’s try some more. Food Chain: http://www. ecokids
Now let’s try some more! Food Chain: Food Web: