Eating for Energy Energy Pyramid

Eating for Energy 10/1/15 Key Question: Where do organisms get their energy from? Initial Thoughts:

Evidence Definitions Inorganic – non-living; such as minerals Organic – Once living, containing carbon Trophic Level – where they are in the food chain: ie, grasses, plants are in the same trophic level

Definitions  Predator – an animal that naturally preys on others.  Prey - an animal that is hunted and killed by another for food.

Evidence 1:  Draw this example of a food chain in your journals:

Evidence 2, Energy Pyramid: Producers200 organisms10,000kcal Primary Consumers 100 organisms1,000kcal Secondary Consumers 60 organisms100kcal Tertiary Consumers 15 organisms 10kcal %10 Rule: Consumers only get about 10% kcal of energy

10% RULE  Don’t write down just listen.

Evidence 3:  Cut out and paste the sample food web into your journals. 1. For the food web, label each organism: (Some may have more than one label) - P = producer, 1 = Primary Consumer, 2= Secondary Consumer, 3 = Tertiary Consumer 2. Now label each animal as either a : H = herbivore C = carnivore O = omnivore

Evidence 3:  Go back to your food web: Make a “t” chart and categorize all of the species on the web into “predator” or “prey” Predator Prey * Yes, an animal can be in both columns.

Evidence 4:  food web game: webs/kids_web.htm webs/kids_web.htm  Go to Site #2.  Click on one, or do all 4!  But record at least one in your journal labeling what category the plant/animal is in.

Analysis Q’s 1. Explain what you think is really happening in a food chain: (look back at your example, what is a food chain really telling you?) 2. What is the difference between a food chain and a food web? 3. What would happen if there were more secondary consumers than primary consumers? 4. In your own words, explain what the %10 rule is.

Summary What did you think about energy in ecosystems before this lesson? What did you learn about energy in ecosystems from this lesson? ( Minimum of 4 sentences!!!) What are some further thoughts or questions you have about energy in ecosystems ?

Reflection  Thinking about your backyard, draw a food chain of at least five organisms and label them.

Big Idea  All organisms receive their energy from the sun, either through direct sunlight or by eating other organisms.