4-4-18 Build a Food Web

Do Now: Take out your homework and complete the following statements in your science notebook 1. A(n) is a model that shows several connected food chains. Food web 2. change energy from the environment into food energy. producers 3. cannot make their own food and get energy by eating other organisms. consumers 4. A(n) shows the amount of food energy available at each level of community or trophic level. Energy pyramid 5. A(n) shows how energy flows in an ecosystem through feeding relationships. Food chain

Quiz on Friday, 4/6 Energy in Ecosystems How energy moves in ecosystems Different types of organisms Photosynthesis, chemosynthesis How energy movement is modeled Food chains, food webs Energy pyramids

HW Review: Key Concept Builder – How is the movement of energy in an ecosystem modeled? A food chain is a model that shows how food energy moves from the environment to several organisms. Drawings should indicate the Sun with an arrow pointing to a plant, which has an arrow pointing to a rabbit, which has an arrow pointing to a fox. The plant, rabbit, and fox should be labeled in the following order: producer, herbivore, carnivore. Producer Herbivore Carnivore

HW Review: Key Concept Builder – How is the movement of energy in an ecosystem modeled? 3. A food web is a model that shows several connected food chains. 4. Drawings may vary but should include the following names of organisms and arrows: plants that have arrows pointing to rabbits, mice, and grasshoppers; rabbits that have an arrow pointing to an owl; mice that have arrows pointing to snakes and an owl; grasshoppers that have an arrow pointing to frogs; frogs that have an arrow pointing to snakes; snakes that have an arrow pointing to an owl.

Build a Food Web Activity As you have learned, a food web is a model of how energy moves through a community of organisms. Food chains show only a single set of energy transfers, ignoring that many organisms obtain energy from many different sources, and in turn may provide energy to many different organisms. You will be building your own food web. Materials: Construction paper Picture cards Markers/pencils Scissors Glue

Build a Food Web Activity Important Things: Write your group’s names, period number, and date on the upper-right hand corner. Make sure you include the Sun in your food web! Find the Color Key Card. You will use different colors to color each of the triangles for each type of trophic level. Decide on 15 picture cards to use before you start cutting. Your food web must have at least 2 organisms from each trophic level. So, you will need to plan ahead. A good idea is to make a draft food web by writing organism’s names on a separate piece of paper In some cases, an organism might qualify as multiple types of consumer. If this is the case, simply color code that organism with each of the colors according to your color key card. Draw arrows to show energy passing from one organism to another Complete this by the end of the class period.