energy flow through an ecosystemharrissci7.weebly.com/uploads/1/4/3/0/14305368/ecosystem...energy...
TRANSCRIPT
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Energy Flow through an Ecosystem
Photosynthesis,
Food Chains,
Food Webs, &
Energy Pyramids
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Organisms that can make glucose during photosynthesis
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Plants use ___________
they receive from the sun
& convert it to
______________
in a process called
____________.
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6CO2 + 6H2O + sunlight & chlorophyll
C6H12O6 + 6O2
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Producers use most of the energy they make for
___________.
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The energy that is not used by producers can be passed on to organisms that cannot make their own energy.
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Organisms that cannot make their own energy
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A consumer that eats producers to get energy:•Is called a (primary) or
___________________
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Most of the energy the primary consumer gets from the producer is used by the consumer. Some energy is stored and can be passed on.
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A consumer that eats another consumer for energy:
•Is called a __________or second order consumer
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Most of the energy the secondary consumer gets from the primary consumer is used by the secondary consumer. Some energy is stored and can be passed on.
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A consumer that eats a consumer that already ate a
consumer:•Is called a 3rd order
or __________ consumer
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Types of Consumers:Organism that cannot make its
own food so it consumes plants.
Organism that cannot make its
own food so it consumes plants
and animals.
Organism that cannot make its
own food so it consumes other
animals.
Organism that breaks down dead
plants and animals to recycle
nutrients in the environment.
Think of examples for each type of consumer!
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Consumers that eat other dead consumers
are called ________
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The transfer of energy from the sun to producer to primary consumer then to higher order consumers
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Label the parts of this food chain:
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Food Chains Show Available Energy
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More Food Chains
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Another way of showing the transfer of energy in an ecosystem
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Energy Pyramids Show•It takes a large number of producers to support a small number of primary consumers
•It takes a large number of primary consumers to support a small number of secondary consumers
•Energy is transferred up the food pyramid
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•Interconnected food chains
•They show the feeding relationships in an ecosystem
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How are food webs
limited models?Food webs do not include
all parts (animals and
resources) of an
ecosystem.
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How Many Chains are in
this web?
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Identify the Producers, Consumers, & Decomposers:
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Now let’s try some more!
Food Chain:
http://www.ecokids.ca/pub/eco_info/top
ics/frogs/chain_reaction/index.cfm
Food Web:
http://www.harcourtschool.com/activity/
food/food_menu.html