Energy in Ecosystems Food Chains, Food Webs and Energy Pyramids Courtesy: .
AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are...
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Transcript of AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are...
![Page 1: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/1.jpg)
AIM: What are Food Chains, Webs and Pyramids?
Construct models to demonstrate that organisms are
related by how energy is transferred in an ecosystem
![Page 2: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/2.jpg)
Food chainFood chain
Food pyramidFood pyramid
Food webFood web
Food chainFood chain
Food pyramidFood pyramid
Food webFood web
AIM: What are Food Chains, Webs and Pyramids?
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Examine this picture
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What is this caterpillar doing
![Page 5: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/5.jpg)
Examine this picture
![Page 6: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/6.jpg)
Now what happened to the caterpillar ?
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Arrange these organisms as to WHO eats WHO
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What does the food chain tell us about the relationship of organisms in that food chain?
What does the food chain tell us about the flow of energy in the chain?
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DEFINES: the flow of energy from one animal to another
It defines “who” eats “who”
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What might happen if there were no
caterpillars
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What might happen if there were less mice?
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WRITE DOWN A FOOD CHAIN IN YOUR NOTEBOOK
for hawks, berries, & birds
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BERRIES
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BERRIES
BIRDS
HAWKS
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EXAMINE THESE TWO FOOD CHAINS
Leaves worms bird
berries Squirrels hawks
However, do birds only eat worms?
What else do birds eat?
What else might hawk eat?
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Does this give MORE detail or LESS detail then the food
chain model?
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A food web shows more interactions of organisms
then a food chain!
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In a FOOD WEB, Green Plants are referred to as … ?
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In a FOOD WEB, Green Plants are referred to … ?
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What level consumer are the rabbit, mouse, grasshopper and termite?
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What level consumer are the rabbit, mouse, grasshopper and termite?
![Page 27: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/27.jpg)
What level
consumer are the the fox, snake, shrew,
and bird?
![Page 28: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/28.jpg)
What level
consumer are the the fox, snake, shrew,
and bird?
![Page 29: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/29.jpg)
Now what level
consumer is the
mouse?
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Now what level
consumer is the
mouse?
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What level is the fox now?
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What level is the fox now?
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What happens to ALL plants and
animals after
they die?
![Page 34: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/34.jpg)
What happens to ALL plants and
animals after
they die?
![Page 35: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/35.jpg)
What Animal is this?
How many mice does he need to eat per day/week?
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How many grasshoppers do two mice need to eat per day
or per week week?
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How much grass do those “hoppers” need?
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What is grass called?
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What are the “hoppers” called?
![Page 43: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/43.jpg)
What are the mice called?
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What is the hawk called?
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What is the hawk called?
![Page 46: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/46.jpg)
This in an example of ???
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FOOD PYRAMID
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It takes more animals of a lower level to support the level above it
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As you move up the pyramid, there is less and less energy
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It take more grass to support a population of “hoppers”
![Page 51: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/51.jpg)
It take more hoppers to support a population of mice
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It take more many mice to support just on hawk!
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Dec
reas
ing
Num
ber o
f Org
anis
ms D
ecreasing Am
ount of Energy
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A food pyramid
•is a model of a food chain
•Shows the flow of energy
•Shows the amount of energy in terms of the number of organisms
•Shows THAT greater populations of organisms are needed at lower levels on the pyramid, to support smaller populations at the top of the pyramid.
![Page 55: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/55.jpg)
REVIEW VOCABULARY – AND THE AIM – AND THE OBJECTIVES
AIM: What are habitats and niches?
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Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem
Food chain, Food Food chain, Food pyramid,pyramid,
Food webFood web
Food chain, Food Food chain, Food pyramid,pyramid,
Food webFood web
![Page 57: AIM: What are Food Chains, Webs and Pyramids? Construct models to demonstrate that organisms are related by how energy is transferred in an ecosystem.](https://reader038.fdocuments.in/reader038/viewer/2022110403/56649e735503460f94b73712/html5/thumbnails/57.jpg)
Class Activity:
Worksheets
Word Problems
AIM: What are habitats and niches?
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Homework:
INTERNET QUESTIONS
Paragraph
AIM: What are habitats and niches?