Unit 2 – Ecology Energy Flow through the Ecosystem

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Presentation transcript:

Unit 2 – Ecology Energy Flow through the Ecosystem Ms. McCabe SC.912.L.17.9, SC.912.E.7.1, SC.912.P.10.1 (Honors)

Do Now 9/29-30/15 Examine the following food web. Assume there was a “weasel disease” that wiped out all male weasels. Tell what would happen to the grasshopper, spider, shrew, and owl populations because of the weasel disease. Pay close attention to the arrows. Turn in at the basket when finished.

Guiding Questions What influence do decomposers, producers, and consumers have on an ecosystem? Identify symbiotic relationships. How do we use food webs and energy pyramids to show the flow of energy through an ecosystem? Describe the energy pathways through a food web or energy pyramid. Discuss how available energy is lost between trophic levels. How do the biogeochemical cycles support the Law of Conservation of Matter? How do the cycles relate to the sustainability and maintenance of an ecosystem? Explain how homeostasis requires a constant energy input and is maintained by the cycling of matter through biotic and abiotic portions of the ecosystem. How is the Sun the ultimate source of energy for life on Earth?

Engage – Label the Picture Take out 1 sticky note per group List the following organisms in this order: Plant Grasshopper Spider Shrew Weasel Hawk Owl

Engage – Label the Picture Tell whether each organism is a producer, consumer, or decomposer Who are the decomposers?? Worms, fungi, crayfish, and bacteria (and more!) What’s their trophic level? Secondary consumers Return nutrients from living things back into the environment

Explore – The Blind Artist (Materials) Per group materials 1 set of colored pencils or markers 1 sheet of white paper Fold the paper into 4 sections Label each section Water Cycle – Seat 1 Carbon Cycle – Seat 2 Nitrogen Cycle – Seat 3 Phosphorus Cycle – Seat 4

Explore – The Blind Artist (Procedure) For the Water Cycle, the person at Seat 1 will need the paper and colored pencils/markers Your team will have 6 minutes to describe and draw this cycle. This person is to remain “blind” throughout this activity. Must be seated so that they cannot see the board May only draw exactly as they have been told by team members Team instructions: Person 2 – landscape and caption describer (bodies of water, mountains, ground description, boxes of information) Person 3 – weather & arrow describer (precipitation, clouds, lightning, direction/color of arrows) Person 4 – animal, plant, and industry describer (where are they, what are they doing)

Explore – The Blind Artist : The Water Cycle, p.81

Explore – The Blind Artist (Procedure) Team check the artist’s creation.

Explore – The Blind Artist (Procedure) For the Carbon Cycle, the person at Seat 2 will need the paper and colored pencils/markers Your team will have 6 minutes to describe and draw this cycle. This person is to remain “blind” throughout this activity. Must be seated so that they cannot see the board May only draw exactly as they have been told by team members Team instructions: Person 1 – landscape and caption describer (bodies of water, mountains, ground description, boxes of information) Person 3 – weather & arrow describer (precipitation, clouds, lightning, direction/color of arrows) Person 4 – animal, plant, and industry describer (where are they, what are they doing)

Explore – The Blind Artist : The Carbon Cycle, p.83

Explore – The Blind Artist (Procedure) Team check the artist’s creation.

Explore – The Blind Artist (Procedure) For the Phosphorus Cycle, the person at Seat 4 will need the paper and colored pencils/markers Your team will have 6 minutes to describe and draw this cycle. This person is to remain “blind” throughout this activity. Must be seated so that they cannot see the board May only draw exactly as they have been told by team members Team instructions: Person 1 – landscape and caption describer (bodies of water, mountains, ground description, boxes of information) Person 2 – weather & arrow describer (precipitation, clouds, lightning, direction/color of arrows) Person 3 – animal, plant, and industry describer (where are they, what are they doing)

Explore – The Blind Artist : The Nitrogen Cycle, p.84

Explore – The Blind Artist (Procedure) Team check the artist’s creation.

Explore – The Blind Artist (Procedure) For the Nitrogen Cycle, the person at Seat 3 will need the paper and colored pencils/markers Your team will have 6 minutes to describe and draw this cycle. This person is to remain “blind” throughout this activity. Must be seated so that they cannot see the board May only draw exactly as they have been told by team members Team instructions: Person 1 – landscape and caption describer (bodies of water, mountains, ground description, boxes of information) Person 2 – weather & arrow describer (precipitation, clouds, lightning, direction/color of arrows) Person 4 – animal, plant, and industry describer (where are they, what are they doing)

Explore – The Blind Artist : The Phosphorus Cycle, p.85

Explore – The Blind Artist (Procedure) Team check the artist’s creation.

Explain – The Blind Artist Review

Explain – The Blind Artist Review

Explain – Biogeochemical Cycles Answer/copy the following on a separate sheet of notebook paper. Individual assignment. Noise level = a whisper! How do the biogeochemical cycles (water, carbon, nitrogen, & phosphorus) support the Law of Conservation of Matter? What would happen to the water cycle if there were no producers/autotrophs?

Explain – Biogeochemical Cycle Processes What makes these cycles happen? Biological = by living organisms Eating, breathing, “burning” food, eliminating waste Geological = volcanic eruptions, formation/breakdown of rock, major movements of matter below Earth’s surface

Explain – Biogeochemical Cycle Processes What makes these cycles happen? Biological = by living organisms Eating, breathing, “burning” food, eliminating waste Geological = volcanic eruptions, formation/breakdown of rock, major movements of matter below Earth’s surface B B G

Explain – Biogeochemical Cycle Processes What makes these cycles happen? Chemical & Physical = weather, clouds, precipitation, running water, lightning Human Activity = mining & burning of fossil fuels, land clearing, forest burning, making & using fertilizers

Explain – Biogeochemical Cycle Processes C&P Explain – Biogeochemical Cycle Processes C&P C&P H What makes these cycles happen? Chemical & Physical = weather, clouds, precipitation, running water, lightning Human Activity = mining & burning of fossil fuels, land clearing, forest burning, making & using fertilizers H C&P H

Elaborate – Forms of Energy Energy is a one-way flow through the biosphere. Matter is recycled within and between ecosystems in the biosphere. Food Web vs. Energy Pyramid Explain that in a food web, energy and matter are transformed one way through the one-way arrow. In the pyramid only some energy (10%) is transferred from one level to the next.

Elaborate – Forms of Energy (HONORS) Potential Kinetic Mechanical Heat Electrical Electromagnetic Sound Chemical Nuclear

Evaluate – HOMEWORK due next class Your homework is the Food Chains & Webs Worksheet Packet There are 22 questions It is worth 25 points You may write on the worksheet