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Thursday December 6, 2012 • Learning Target: I can describe flow of energy within an ecosystem. • Essential question : Why is an energy pyramid designed in the shape that it is? What evidence do you have to support this. • Homework: Study your study guide and vocabulary. Project Due on Mon 12-10 • Warm Up: Complete the Measurement practice INDEPENDANTLY. This will be graded in 7 minutes.
Independent Practice Photosynthetic process The energy conversion that occurs in Photosynthesis is: _____to ______ or
Freshwater ~vs.~ MarinePart 5 Food Pyramid
Energy Pyramid 4th levelconsumer An energy pyramid shows the amount of energy that moves from one feeding level to another in a food web. The most energy is available at the producer (base) level of the pyramid. As you move up the energy pyramid from base to top, less energy is available, because organisms at each level use some of the energy to carry out life processes. *In general only about 10% of the energy contained in one level of a food web/pyramid is transferred to the next level. For the ecosystem to function energy must be energy available and it must be transferred. 3rd consumer 2nd level consumer The Law of Conservation tells us that energy is not created or destroyed, but simply changes forms. Evidence of this can be seen in the Energy Pyramid. 1st levelconsumer PRODUCERS
Flow of Energy in the Ocean Sun or Deep Sea Vent Producers Primary Consumers Secondary Consumers Tertiary Consumers
Primary (1st level) Consumers • Eat the producers - herbivores • Sea urchins – eat kelp • Sea butterflies – feed on phytoplankton • Parrot fish – eat algae
Secondary (2nd level) Consumers • Eat the primary consumers – carnivores or omnivores • Jelly fish – eat small fish • Clown fish – eat small invertebrates • Sea otters – eat sea urchins
Tertiary (3rd level) Consumers • Eat the secondary consumers • Polar bears – eat seals, walrus, and beluga whales • Great White sharks – eat dolphins, sharks, whales, sea lions, sea turtles and sea birds • Bull sharks – eat dolphins, rays, sea turtles and sea birds
Decomposers • Filter Feeders – remove dead materials floating in the water • Ex. Tube worms and anemones • Bottom Feeders – break down dead materials that has made its way to the ocean floor • Ex. Sea Cucumbers and Star Fish
Predator Prey • Predators hunt and consume their prey • Sometimes many predators compete for the same prey All three of these are predators of insects and compete for insects
Energy pyramid • Look at the cards on your table. • Each card shows what the organism eats • You are going to create an energy pyramid by stacking cups • You will put the producers at the bottom row (5 organisms) • You will put the next organism on top of what it eats. • You will end up with a pyramid with 5 rows.
Once you have the pyramid complete, • Fill in the organisms on your worksheet and answer the 5 questions at the bottom • This will be turned in for a grade.
Thursday December 6, 2012 • Learning Target: I can describe the process of photosynthesis and chemosynthesis and the energy conversions that occur in each. • Essential question : How are photosynthesis and Chemosynthesis similar and different? • Homework: Study your study guide and vocabulary. Project Due on Mon 12-10