1. Warm Up #8
How are photosynthesis and chemosynthesis different?

2. Ch. 6 Interactions Within Ecosystems
Lesson 2: Energy and Matter

3. Essential Questions How does energy move through an ecosystem?
How does matter move through an ecosystem?

4. Food Energy
Producers – organisms that use an outside energy source, such as the Sun, and produce their own food
Ex: plants and other organisms that use photosynthesis
Chemosynthesis – organisms use chemicals instead of light (some bacteria)

5. Food Energy Consumers – organisms that can’t make their own food
Herbivores – eat producers
Omnivores – eat producers and consumers
Carnivores – eat herbivores, omnivores, and other carnivores
Detritivores – consume the bodies of dead organisms and wastes produced by living organisms
Decomposers – microscopic detritivores

6. The Flow of Energy
Food Chains – simple model showing how energy moves from producer to 1 or more consumer
BrainPOP – Food Chain
Food Webs – a model of energy transfer that can show how the food chains in a community are interconnected

7. The Flow of Energy
Energy Pyramids – a model that shows the amount of energy available in each link of a food chain
There’s always a loss of energy at each level due to heat lost and the animal using some of it
The reason why there’s more producers than carnivores in a community
BrainPOP – Energy Pyramid

8. Warm Up #9
What are the parts of the nitrogen cycle?

9. Cycling Materials
Nitrogen Cycle – describes how nitrogen moves from the atmosphere to the soil into the bodies of living organisms and back to the atmosphere
nitrogen gas makes up 78% of Earth’s atmosphere

10. Cycling Materials
Water Cycle – water moves from the Earth’s surface into the atmosphere and then back again

11. Cycling Materials
Oxygen and Carbon Dioxide Cycles – cellular respiration releases carbon dioxide and plants take that in during photosynthesis releasing oxygen