Energy and the Food Web

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Energy and the Food Web
Created by Roberta Layton Armstrong School
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Sixth Grade Science

• Standard addressed is
• Ecology - Interactions
• All organisms, including humans, are part of and
  depend on one global food web that begins with
  organisms at the bottom of the energy pyramid.
• As energy flows through the ecosystem, all
  organisms must capture the portion of energy
  available to them and transform it to usable
  forms.

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Energy Transfer
Where is the most energy available?
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Energy Transfer
At each level of a food chain about 90 of the
energy is lost, so the most energy is available
at the sun and the least is available at the
hamburger.
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Energy transfer is best shown as a pyramid like
the one below. As you go up the pyramid there is
less and less energy available.
Draw an energy pyramid like this one in your
journal and label each level.
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Energy Pyramid
Consumers
Omnivores
Consumers
Carnivores
Consumers
Carnivores
Consumers
Herbivores
Producers
Plants
This is just one food chain energy pyramid. Can
you think of others?
End of Activity