Food Chains

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Food Chains
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• Crickweb Food Chain
• Paraphrase the first paragraph that explains a
  food chain and then hold your mouse over the
  pictures in the food chain below.
• Read and discuss the information and vocabulary
  given

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• Where does an object get its energy?
• From the food it eats.
• How do we know which way the arrow should point
  in a food chain?
• The arrow points to the organism the energy is
  being transferred to.
• Can an organism get its energy from more than one
  organism? Why or why not?
• How does this relate to us and what we eat?

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• Every food chain or web must begin with energy
  from the Sun and then a producer (green plant).
• Consumers (herbivores and omnivores) eat the
  producers.
• Other consumers (carnivores or omnivores) then
  eat the herbivores or smaller carnivores.

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• Every food chain or web finally ends with
  decomposers (worms, ants, bacteria, fungi, etc)
  that feed on energy stored in the wastes or
  remains of producers and consumers.
• These decomposers are one of natures recyclers.
  They recycle nutrients and put them back into the
  soil for new plants to grow.

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(No Transcript)
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Producers

• A living thing that can make its own food, such
  as plants

Definition from Brain Pop Jr.
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Consumers

• A living thing that eats another living thing for
  food and energy

Definition from Brain Pop Jr.
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Decomposers

• Organisms that eat the wastes or the remains of
  other organisms
• Worms, ants, bacteria, fungi

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Herbivores

• Consumers that only eat plants
• Ex cows, deer, giraffes, grasshopper,
  caterpillar, zebra,

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Omnivores

• Consumers that eat plants and animals
• Ex humans, bears

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Carnivores

• Consumers that eat meat
• Ex lions, tigers, wolves, shark, cougar, hawk,
  snake

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Predators

• An animal that hunts other animals for food

Definition from Brain Pop Jr.
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Prey

• An animal that is eaten by other animals

Definition from Brain Pop Jr.
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Lets go on a nature walk! What might we see?
Maybe flowers along the forest path. The flowers
get their energy to grow from the __________.

1. air
2. Sun
3. producers

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What else uses that energy to grow? There goes a
rabbit hopping across the path! The rabbit gets
its energy from eating__________.

1. grass
2. Sun
3. prey

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The rabbits energy could then be transferred to
a ________, if it gets eaten. Its amazing how
many depend on the Suns energy!

1. producer
2. shark
3. coyote

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The Suns energy gets to Earth. Lets think about
where it goes. The energy first goes to ________,
which use the Suns energy to grow.

1. rabbits
2. plants
3. consumers

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Now, think about animals. Animals get their
energy to grow from what they ____.

1. eat
2. breathe
3. see

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Food chains are made up of many parts. If one of
those parts is __________, or taken out, it
affects other parts.

1. Stays the same
2. removed
3. concerned

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Imagine the desert. The Suns energy goes to a
cactus, then to a beetle, then to a bird. What
happens if the birds are taken away? The
____________ would have no predator, which means
they would increase in number.

1. cacti
2. beetles
3. birds

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More beetles means that more ______ is eaten!
What else might happen?

1. Cactus
2. beetles
3. birds