1. Energy Flow
Unit 10 - Lesson 3 Notes

2. Matter
Matter can be recycled over and over again, but energy is converted from one form to another.
During photosynthesis producers convert light energy to chemical energy.
Chemosynthesis – the production of energy-rich nutrient molecules from chemicals.

3. Energy Transfer Mufasa Explains Video Link / YouTube
Energy stored in the molecules of one organism is transferred to another when one organism becomes food for another organism.
Mufasa Explains
Video Link / YouTube

4. Energy Transfer
Food Chains – a simple way of showing how matter and energy pass from one organism to another.
Producers Consumers Decomposers
(Various Levels)

5. Energy Transfer
Food Web – Shows all the possible feeding relationships among organisms in a community.
Producers Consumers Decomposers
(Various Levels)

6. Comparing Food Chains & Food Webs

7. decreasing number of organisms decreasing amount of energy
Energy Pyramid
Energy Pyramid – shows the amount of energy available at each feeding level in an ecosystem
decreasing number of organisms
decreasing amount of energy

8. Energy Pyramid 100 kcal 1,000 kcal 10,000 kcal
Energy comes from the sun, but not all organisms can retain that energy.
Energy (kcal) is lost when you go up each level in the food chain.
Only 10% of the energy is transferred to the next level.
100 kcal
1,000 kcal
10,000 kcal

9. Tertiary Consumer Secondary Consumer Primary Consumer Producers
Energy Pyramid
Tertiary
Consumer
Secondary Consumer
Primary Consumer
Producers