Investigations 4-5 Test

Master ecosystem energy! Worksheet on food webs, trophic levels, and energy flow.

Where do plants (producers) get the energy they need to produce food? The Sun , through Photosynthesis By eating other organisms Eating power bars Nutrients in soil Where do plants (producers) get the energy they need to produce food? The Sun , through Photosynthesis By eating other organisms Identify one autotroph in the food web above. Identify one autotroph in the food web above. Fox grasshopper Plantain Identify one heterotroph in the food web above. Identify one heterotroph in the food web above Berries Buzzard Plantain Match the category of energy use with its proper example. Movement Swim Waste Defecate Growth Lay an egg Maintenance Heal a broken bone In the first column list the 4 categories that organisms use energy for. In the second column give one example of an activity that fits into each category. Category Example Label the three parts of the chemical equation below. Reactants Yields Products Label the three parts of a chemical equation below. Use the following words. Products, reactants, yields Yields Reactants Products Based on the food web above, if you have 10 Kg of osprey, how many Kg of shrimp must the ecosystem produce to sustain the osprey? Based on the food web above, if you have 10 Kg of osprey, how many Kg of perch must the ecosystem produce to sustain the osprey? 10 Kg 1 Kg 1, 000 Kg Match the word to the correct definition Biomass Total organic matter in an ecosystem Calorie Measure of heat energy Carbohydrate Used as building materials and energy by the plants that make the food and by animals that eat plants Tropic Level Levels in a food web True or False: More energy and biomass is found in the levels at the top of an energy pyramid than at the bottom? True False What happens to the majority of energy at any trophic level? What happens to the majority of energy at any trophic level? It transfers up the food web It is stored for later use It is lost to the atmosphere as heat energy For science class, you decided to burn a peanut to figure out how much energy it contains. You had 10 mL of water set above the peanut. Before you ignited the peanut you measured the water at 25 degrees Celsius. After it was done burning you measured the water temperature at 75 degrees Celsius. How many calories did the peanut contain? True or False: A cheese puff contains calories True False Food Web In a pond behind the school, students observed several interactions. read the journal entries below to find out what they saw.-Aquatic snails were found only on algae covered rocks.-Snails, frogs, and small fish were harder to find after a flock of herons came to the pond-frogs sat in the shallow water when adult mayflies were present.-Small fish were seen eating mayfly larvae in the water-there were more mayflies present when the amount of algae, increased in the pond.construct a food web based on the students' observations. label as specifically as you can which are producers, consumers, and decomposers. BONUS: Balance the following equation