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
Energy is Transferred!
1ST Energy Transfer
SUN AUTOTROPH
2ND Energy Transfer
HETEROTROPH
3RD Energy Transfer
HETEROTROPH HETEROTROPH
4TH Energy Transfer
HETEROTROPH HETEROTROPH
5TH Energy Transfer???
HETEROTROPH HETEROTROPHFungi are Decomposers
FOOD WEB
a network of
connected food chains
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
Trophic Level# of energy transfers from sun to organism
(i.e. each step in a food chain)
Energy Flow is Inefficient
~17% energy stored as fat~48% energy is lost as HEAT~35% energy becomes waste
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.
So, if I start with
• 1000 units of energy in my producer trophic level,
• What units of energy are available at each trophic level?
Pyramid of EnergyPYRAMID OF ENERGY
CYCLE
Matter is re-cycled! Molecules
are simply rearranged as they are made and
broken down.
Water Cycle• Precipitation/Condensation• Absorption (roots,
groundwater/soil, plant leaves)• Transpiration (through stomata
in plant leaves).• Evaporation (heat)• BRAIN POP
Brain Pop Videos
• http://www.brainpop.com/science/energy/energypyramid/
• http://www.brainpop.com/science/ecologyandbehavior/foodchains/