Conservation of Mass and Energy in Living Systems

Name: _____________________________________ Period: _____________ Date: __________________ SC.8.L.18.4 Conservation of Mass and Energy in Living Systems Essential Question: How is matter and energy transferred within and between organisms and their physical environment? Practice 1: Match each item as an example of Matter or Energy Matter Energy A. Sunlight B. Water C. Air D. Gasoline E. Heat Practice 2: Select the correct description. 2. How does energy move through living systems? A. Energy can be created by organisms and can be passed on if it is not used by that organism B. All of the energy is used up by organisms as they move, grow and reproduce so less energy is available for the next organism in the food chain C. Energy is transformed and/or lost as heat as it passes from one organism to the next, but the total amount always stays the same D. Energy is created during photosynthesis Practice 3: Select the correct answer 3. 10 grams of water was poured into a container. The bottle was sealed and placed in the hot sun. One hour later, the bottle was observed, and no water was visible. Which scenario correctly describes the contents of the bottle after the one hour? A. There is no water left in the bottle B. There is 10 grams of water vapor in the bottle C. There is less than 10 grams of water vapor in the bottle because gas has less mass than liquids D. There is more than 10 grams of water vapor in the bottle because gas takes up more space Practice 4: Select all that apply 4. Which of the following are the starting materials for cellular respiration? A. Light energy B. Sugar C. Water D. Carbon dioxide E. Oxygen Practice 5: Select the correct answer. 5. Which of the following is a large source of carbon found in the soil? A. Cellular respiration B. Decomposition of dead plants and animals C. Combustion of fossil fuels D. Photosynthesis Name: ______________________________ Period: _____________ Date: _____________ Conservation of Mass and Energy in Living Systems Practice 6: Select the correct answer. 6. If a total of 100 grams of water, yeast, and sugar are placed inside a flask and the flask is covered with a balloon to trap the carbon dioxide, what should be the final mass of the container after the process is completed? A. More than 100 grams because the yeast will grow during the process B. It will remain 100 grams because mass is neither created or destroyed C. Less than 100 grams because some of the mass is used up in the process D. Less than 100 grams because the carbon dioxide gas is less than the carbon in the sugar molecule Essential Question: How is matter and energy transferred within and between organisms and their physical environment? ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________