1. Food Chains, food webs and energy pyramids

2. Food Chain Vocab Plant eater Meat eater Makes own food
Consumers/
Heterotrophs
Herbivore
Omnivore
Plant eater
Carnivore
Plant and meat eater
Meat eater
Producer/
Autotroph
Makes own food
Food Chain
Vocab
Breaks down dead organisms
Has to eat to get energy
Eats already dead animals (road kill)
Consumer/
Heterotroph
Decomposer
Scavenger

3. A food chain shows how we are all connected by what we eat

5. Notice the arrow direction!!
A food chain shows the path of energy from one living thing to another.
The arrows show the direction of energy not who's eating who.

6. So the bird is eating the butterfly. The energy is flowing to the bird.

7. Energy passes from Sun to Producers to consumers
(Photosynthesis)
Radiant energy is converted to chemical energy and passed on to other organisms in the ecosystem.
Energy passes from Sun to Producers to consumers

8. A food chain always starts with a Producer or Autotroph.

9. Only 10% of the energy is passed on.
$10
Only 10% of the energy is passed on.
Some energy is used and some is lost as heat.
$10,000
$1000
$100

10. $10
$10,000
$1000
$100

11. A food web is several connected food chains

13. Energy Pyramid

14. Chains can also be arranged in an energy pyramid.
Producers are on the bottom because they have the most energy

15. Producer Least mass Least Energy Primary Consumer Most energy
3rd to eat
Tertiary Consumer
2nd to eat
Secondary
Consumer
First to eat
Primary Consumer
Most energy
Most mass
Producer

16. http://www. world-builders

17. Pyramid of Energy Heat Heat Heat Heat 0.1% Consumers 1% Consumers
100% Producers
Heat
Section 2.2 Summary – pages

18. Birds/Secondary Consumer Grasshoppers/Primary Consumer
Pyramid of Numbers 3
Fox/Tertiary Consumer 30
Birds/Secondary Consumer
300
Grasshoppers/Primary Consumer
3000
Grasses/Producer

20. Herbivore Producer Autotroph Secondary Consumer Primary Consumer
Omnivore
Heterotroph
Heterotroph
Producer
Autotroph
Heterotroph
Heterotroph
Carnivore
Decomposer
Tertiary Consumer

21. Removing an organism from the chain or pyramid will cause great harm and the closer it is to the beginning or bottom the worse it is.