This 1974 video introduces the concept of energy chains and embedded energy by following the materials and energy that go into making a piece of toast; from oil well, refinery, fertilizer plant, farm, mill, bakery, and grocery, to home. The fact that this video is now over 30 years old puts this silent film in historical context and makes an interesting exercise for students to attempt to update it in relation to the current energy situation and global climate change conditions.
Subject: Environmental Science:Soils and Agriculture:Food Production and Distribution, Environmental Science:Ecosystems:Ecology, Geoscience:Soils, Geology, Environmental Science:Energy, Biology, Geoscience:Atmospheric Science:Climatology Resource Type: Scientific Resources:Research Results, Audio/Visual:Animations/Video, Journal Article Theme: Teach the Earth:Course Topics:Soil, Environmental Science, Atmospheric Science, Teach the Earth:Incorporating Societal Issues:Climate Change
