Big Ideas | Page 87

Key Concepts • The amount of water and power used by society depends on both individual and collective choices. • Consumers “drive” the marketplace with their demands for goods and services. • All products—including food, clothing, and consumer goods—require energy and water in their manufacture or distribution. These “embedded” resources contribute to the monetary and environmental cost of a product, but are often hidden to consumers. • Environmentally literate persons know how much energy and water they use, and for what purpose, and where their energy and water comes from. Standards Connections Next Generation Science Standards SCIENCE AND ENGINEERING PRACTICES SAMPLE STUDENT ENGAGEMENT, GRADES 9–12 Analyzing and Compare the embedded water in different products you use, or try out a water footprint calculator to determine which of your activities use the most water resources. For example, see National Geographic’s “The Hidden Water We Use” at environment.nationalgeographic.com/ environment/freshwater/embedded-water/ and National Geographic’s water footprint calculator at environment.nationalgeographic.com/ environment/freshwater/change-the-course/water-footprint-calculator/. Interpreting Data BIG IDEAS | Grades 9–12 | SAN FRANCISCO PUBLIC UTILITIES COMMISSION 87