energy is transferred!
DESCRIPTION
Energy is Transferred!. 1 ST Energy Transfer. SUN AUTOTROPH. 2 ND Energy Transfer. HETEROTROPH. 3 RD Energy Transfer. HETEROTROPH. HETEROTROPH. 4 TH Energy Transfer. HETEROTROPH. HETEROTROPH. 5 TH Energy Transfer???. HETEROTROPH. HETEROTROPH Fungi are Decomposers. - PowerPoint PPT PresentationTRANSCRIPT
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Energy is Transferred!
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1ST Energy Transfer
SUN AUTOTROPH
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2ND Energy Transfer
HETEROTROPH
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3RD Energy Transfer
HETEROTROPH HETEROTROPH
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4TH Energy Transfer
HETEROTROPH HETEROTROPH
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5TH Energy Transfer???
HETEROTROPH HETEROTROPHFungi are Decomposers
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FOOD WEB
a network of
connected food chains
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TROPHIC LEVELS = steps in a food chain
• 1st trophic level is the producer • 2nd trophic level is the primary
consumer or herbivore• 3rd level is the secondary consumer or
smaller carnivore• 4th level is the tertiary consumer or
larger carnivore
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Trophic Level# of energy transfers from sun to organism
(i.e. each step in a food chain)
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Energy Flow is Inefficient
~17% energy stored as fat~48% energy is lost as HEAT~35% energy becomes waste
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What’s left?Only 10% of energy from
previous trophic level is available to next level as food or biomass. This is known as the 10% law.
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So, if I start with
• 1000 units of energy in my producer trophic level,
• What units of energy are available at each trophic level?
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Pyramid of EnergyPYRAMID OF ENERGY
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CYCLE
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Matter is re-cycled! Molecules
are simply rearranged as they are made and
broken down.
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Water Cycle• Precipitation/Condensation• Absorption (roots,
groundwater/soil, plant leaves)• Transpiration (through stomata
in plant leaves).• Evaporation (heat)• BRAIN POP
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Brain Pop Videos
• http://www.brainpop.com/science/energy/energypyramid/
• http://www.brainpop.com/science/ecologyandbehavior/foodchains/