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4th Grade Science Presentation on Food Chains

4th Grade Science Presentation on Food Chains

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  • When your body digests your breakfast, it releases the energy you need to play
  • A food chain shows the order which animals eat plants and other animals.Each part of a food chain is a link connected to the others.
  • Consumers can not make their own food like producers, they must eat other plants or animals to get their energy.

Rachellefabionar.powerpoint.foodchains Rachellefabionar.powerpoint.foodchains Presentation Transcript

  • Food Chains
    By Rachelle Fabionar
    Brandman University
    October 7, 2010
  • Did you know that every time you run or jump, your body is using energy?
    All living things get the energy they need to move and grow from the food they eat.
  • Do you know where that energy comes from?
    It starts with
    theSUN !!!!
  • Photosynthesis starts
    the chain of energy.
    A food chainshows how
    each living thing gets its food.
  • Plants are called producers because they are able to use light energy from the Sun to produce food (sugar) from carbon dioxide and water.
  • Animals that eat only plants are called herbivores
    (primary consumers).
  • Animals that eat other animals are called carnivores.
    carnivores that eat herbivores are called secondary consumers
    carnivores that eat other carnivores are called
    tertiary consumers
  • Animals and people who eat BOTH animals and plants are called omnivores.
  • Then there are decomposers (bacteria and fungi) which feed on decaying matter.
    These decomposers speed up the decaying process that releases mineral salts back into the food chain for absorption by plants as nutrients.
  • The further along the food chain you go, the less food (and hence energy) remains available.
    • Energy is passed from one link to another
    • Only a fraction of the energy passes on
    • Less and less energy passes up
  • Can you make a food chain?
    Secondary
    Consumer
    Primary
    Consumer
    Tertiary
    Consumer
    Producer
    Decomposer
  • Interactive websites where you can build your own food chain:
    http://www.ecokids.ca/pub/eco_info/topics/frogs/chain_reaction/play_chainreaction.cfm
    http://www.sheppardsoftware.com/content/animals/kidscorner/foodchain/foodchain.htm
  • 4th Grade Content Standards - Life Science
    2. All organisms need energy and matter to live and grow. As a basis for understanding this concept:
    Students know plants are the primary source of matter and energy entering most food chains.
    Students know producers and consumers (herbivores, carnivores, omnivores, and decomposers) are related in food chains and food webs and may compete with each other for resources in an ecosystem.
    Students know decomposers, including many fungi, insects, and microorganisms, recycle matter from dead plants and animals.
  • Resources to expand student learning
    http://www.earthmatters4kids.org/main.html
    http://www.pbs.org/earthonedge/ecosystems/index.html