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3-2 Energy Flow

3-2 Energy Flow. Objectives. Identify the source of energy for life processes. Trace the flow of energy through living systems. Evaluate the efficiency of energy transfer among organisms in an ecosystem. We’ll Be Talking About Energy Today….

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3-2 Energy Flow

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  1. 3-2 Energy Flow

  2. Objectives • Identify the source of energy for life processes. • Trace the flow of energy through living systems. • Evaluate the efficiency of energy transfer among organisms in an ecosystem.

  3. We’ll Be Talking About Energy Today… • Don’t get too excited, you know my stance on ENERGY DRINKS!

  4. Producers • What is the main energy source for life on Earth? • Autotrophs/Producers – use energy from environment to create organic compounds necessary for life. • Photosynthesis – use light energy from sun to create sugar and starches. • Chemosynthesis – use chemical energy to produce carbohydrates.

  5. Producers

  6. Consumers • Heterotrophs/Consumers – rely on other organisms for energy and food supply. We will learn about different types of consumers next week!

  7. Feeding relationships • Energy flows in one directionfrom sun, to producers, to consumers. • Trophic Level – each step in food chain/web. • Only 10% of the possible energy gets passed to the next trophic level!!!!!!!!!

  8. Closure • Anything for the good of the cause? • Mini-notes and flash cards (due Wed.)!!!

  9. Objectives • Identify the source of energy for life processes. • Trace the flow of energy through living systems. • Evaluate the efficiency of energy transfer among organisms in an ecosystem.

  10. Review • What is the difference between a producer and a consumer? • What is another “more scientific” term for producers? • What is another “more scientific” term for consumers? • What are the two processes a producer/autotroph can do?

  11. Types of Consumers • Herbivores – obtain energy (eat) from only plants. • Carnivores – eat onlyanimals.

  12. Types of Consumers • Omnivores – eat both plants an animals.

  13. Types of Consumers • Detritivores – eat plant and animal remains (dead matter).

  14. Types of Consumers • Decomposers – break down organic matter.

  15. Ecological/Energy Pyramids • Fill in the blank: Only about ___% of the energy available in one trophic level gets transferred to the organisms in the next trophic level. • Where does it go? Pg. 72

  16. To Do: • Begin 4 pg. paper. • Look at other things to do for CPPP. • Set up test answers on SMART for phy. Sci. • Plan for Tuesday/Wednesday. • Pack for tomorrow. • Call J.R. and dad. • Get Jolly Ranchers.

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