Food Chains Food Webs and Energy Pyramid Review Sheet
Nutrient Chains, Food Webs, and Energy Pyramids
Resource ID: R4SCI0028
Grade Range: 7
Engage: The ten% Transfer
If you are a runner, you want to follow the 10% rule. Yous should never increase your weekly mileage by more than x% from calendar week to week.
Some people believe that nosotros only use 10% of our brains. Actually this is a misconception. We use all of our brain.
In some states, you must pay a 10% income revenue enhancement.
On many Tv show competitions, only the acme 10% of the contestants move to the next level.
So what exactly is 10%, and what does it correspond?
You lot can call up of 10% as one office of x parts.
For example, if you had 10 spectacles of water, one glass of water would represent 10 percentage, or one-10th.
You can also write information technology every bit a decimal.
Do yous need a visual of ten%? It would look like this!
What would it look like if y'all transferred 10% of the liquid into another container?
It would await like this!
And what would it look like if you lot transferred 10% of the liquid in the second container?
What would ten% of 10% look like?
Here is an example :
In an ecosystem, approximately 10% of an organism'southward energy is transferred to another organism when it is eaten.
The flow of free energy from one organism to another is visualized in a nutrient chain.
Explore: Who'due south Eating Whom?
Become on an take chances, and explore the organisms that live in Antarctica.
Build a food web that shows how food chains are continued in an ecosystem.
Click on the film below to begin the adventure!
*Note*The activity will open in a new window. Upon completion, close the window to return to this page.
Explain 1: Food Bondage
An of import abiotic gene within an community is free energy. Free energy is transferred when one organism is eaten by another organism. A nutrient chain is an like shooting fish in a barrel manner to diagram the flow of free energy in a customs.
Click on the picture to scout the video to learn about food chains.
The video volition open in a new window. Subsequently the video plays, close the window to render to this page.
Record notes from the video in your science notebook or use the Cornell notes located in the "Related Items" department below.
Every bit you lot picket the video, consider the following questions:
- How does energy menstruation in a food chain?
- What is the ultimate source of energy in a food concatenation or nutrient web?
- What two things do all organisms demand to abound and survive?
- Why is only ten% of the energy consumed by an organism passed to the adjacent level?
Cite Source
Paradigm courtesy of Richard Kern
Explain 2: Food Webs
All the food chains in an ecosystem are interconnected and are represented by a food spider web. Nutrient webs show the interdependence among organisms. A food web for an ecosystem is very complex.
Some food webs include decomposers. Decomposers include organisms such as bacteria and fungi. Decomposers breakdown expressionless and decaying organic matter.
Watch the following video to larn almost nutrient webs.
Click on the moving-picture show to lookout man the video.
The video will open up in a new window. Later the video plays, shut the window to return to this page. Record notes from the video in your scientific discipline notebook or utilize the Cornell notes located in the "Related Items" section below.
As you watch the video, consider the following questions:
- How are nutrient chains related to a nutrient web?
- Why are food webs then complex?
- What is the importance of understanding the flow of energy inside an ecosystem?
Cite Source
Epitome courtesy of Richard Kern
Explicate iii: Get With the Flow. . . of the Arrows!
Arrows on a nutrient chain, or food web, represent the menstruation of energy. The placement of the arrows in a food chain or food web is very important. The arrows ever show the management of the energy as it is transferred from 1 organism to some other.
The menstruum of energy tin can also be represented within an energy pyramid.
Notice how the nutrient chain can exist modeled in an energy pyramid.
All organisms, directly or indirectly, become their free energy from the Sun.
Energy flows from the lesser to the acme layer of the pyramid.
Approximately x% of an organism's energy is transferred to another organism.
Some call it the 10% Dominion.
Recall the beakers of water found in the Engage reading. If the water in the beakers represented the energy being transferred from ane trophic or feeding level to the next, how would the free energy pyramid look?
Do You Need More Help?
The following video provides additional assistance with the correct placement of the arrows in a food web.
Source
Video courtesy of Mark Drollinger
Elaborate: Creating Food Chains, Webs, and Energy Pyramids
Source: https://www.texasgateway.org/resource/food-chains-food-webs-and-energy-pyramids
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