Energy Flow

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Energy Flow

  1. 1. Energy
  2. 2. Energy is the ability to cause change
  3. 3. The ultimate source of the energy for life on earth is the SUN
  4. 4. How Organisms Obtain Energy
  5. 6. Energy Flow <ul><li>Flow means to move. </li></ul><ul><li>Energy flows from producer to consumer via matter </li></ul><ul><li>Energy is transferred from one organism to the next, however, a lot of energy is lost to the environment as heat. </li></ul>
  6. 7. Energy Flow <ul><li>Food chain - a model that shows how matter and energy moves through an ecosystem. </li></ul><ul><li>Energy moves from producer to consumer to decomposer. </li></ul>berries -> mice -> black bear
  7. 9. <ul><li>Each organism in a food chain is a feeding step, or trophic level in the movement of matter and energy. </li></ul><ul><li>-Only 10% of energy is passed up each trophic level!!! </li></ul><ul><li>-Because so much energy is lost at each trophic level, there can only be 3-4 steps in a food chain. </li></ul>Energy Flow
  8. 10. Pyramid of Energy Heat 0.1% Consumers 1% Consumers 10% Consumers 100% Producers decomposers feed at each level. Heat Heat Heat

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