1.
Warmup Questions What does an energy pyramid represent? Why is it the pyramid shape? Where does the energy of a food chain come from? What happens to energy as it gets passed down a food chain? ?
3.
Energy Pyramids <ul><li>An energy pyramid is a diagram that shows how much energy is at each step of the food chain. </li></ul><ul><li>A 3d food chain. </li></ul><ul><li>Shows how many organisms at each step of food chain </li></ul><ul><li>Where are there more </li></ul><ul><li>organisms?Why? </li></ul>
4.
Model Energy pyramid <ul><li>We will make an energy pyramid as a class. </li></ul><ul><li>Each row is another level of the pyramid. </li></ul>
5.
Producers. <ul><li>I have 8 producers. Each one of you makes food holding 2 Units of energy. </li></ul><ul><ul><li>Where do you get the energy to make the food? </li></ul></ul><ul><ul><li>What chemical do you make that stores the energy? </li></ul></ul><ul><li>What will the producers do with that energy? </li></ul><ul><ul><li>Use it to grow, </li></ul></ul><ul><ul><li>Use it to live. </li></ul></ul><ul><ul><li>It will burn off in these processes </li></ul></ul>
6.
1 st level or Primary Consumers <ul><li>Each primary consumer also needs 2 units of energy to survive. </li></ul><ul><li>How much energy does our ecosystem have left? </li></ul><ul><ul><li>8 units/ Half of the original 16. </li></ul></ul><ul><li>How many 1 st level consumers can our ecosystem hold? </li></ul><ul><ul><li>4 Half the energy half the organisms. </li></ul></ul><ul><li>Why is there less energy? </li></ul>
7.
2 nd level consumers <ul><li>Each primary consumer also needs 2 units of energy to survive. </li></ul><ul><li>How much energy does our ecosystem have left? </li></ul><ul><ul><li>4units/ Half of the original 8 </li></ul></ul><ul><li>How many 2nd level consumers can our ecosystem hold? </li></ul><ul><ul><li>2 Half the energy half the organisms. </li></ul></ul><ul><li>Why is there less energy? Where did it go? </li></ul>
8.
3 rd level <ul><li>Each 3 rd level consumer also needs 2 units of energy to survive. </li></ul><ul><li>How much energy does our ecosystem have left? </li></ul><ul><ul><li>2 units/ Half of the previous 4. </li></ul></ul><ul><li>How many 3rd level consumers can our ecosystem hold? </li></ul><ul><ul><li>1 Half the energy half the organisms. </li></ul></ul><ul><li>Why is there less energy? </li></ul>
11.
How big can the pyramid get? <ul><li>Why is the third level consumer usually the top of the food chain? </li></ul><ul><li>Do you think its common to have 4 th level consumers? </li></ul><ul><li>Why is it unlikely to have 4 th level consumers? </li></ul><ul><li>Why is it even more unlikely to have a 5 th and 6 th level? </li></ul>
12.
Summary Questions <ul><li>What does an energy pyramid represent? Why is it the pyramid shape? </li></ul><ul><li>Where does the energy of a food chain come from? </li></ul><ul><li>What happens to energy as it gets passed down a food chain? </li></ul><ul><li>Why can there only be around 4 levels in an energy pyramid? </li></ul><ul><li>What is one organism that’s important to a food chain that’s not shown on an energy pyramid? </li></ul>Answer on a sheet of paper.
13.
Summary <ul><li>Draw an energy Pyramid </li></ul><ul><li>First make a food chain. </li></ul><ul><li>Turn your food chain into an energy pyramid. </li></ul><ul><ul><li>Show how many organisms would be at each level. </li></ul></ul><ul><ul><li>Explain what is happening to the energy at each level. </li></ul></ul><ul><ul><li>Show how nutrients can go from the third level consumers back to the producers. </li></ul></ul>
15.
Activity <ul><li>Energy Pyramids </li></ul>Producer I am a ___Algae_______ I am the___Producer____ My energy role is a_______Producer_______ . I get my energy from the___SUN__________ I use energy to_function_________ I use nutrients for___Building Cells________ I get eaten by the___Plankton_________ I give it ___Energy_______ and __Nutrients____ Consumer I am a _____1_______ I am the____First level___2__________ My energy role is a__Consumer/Herbivore____________ . I get my energy from the_____________ I use energy to____________ I use nutrients for___________ I get eaten by the____________ I give it __________ and ______________
16.
Summarizing <ul><li>Write “The Story of Energy” </li></ul><ul><li>You are energy what is your life like in the food chain? </li></ul>
A particular slide catching your eye?
Clipping is a handy way to collect important slides you want to go back to later.
Be the first to comment