Energy expenditure for physical activity Student activity Play

Energy flow and food chains Student activity Play

Energy flow and matter circulation Student activity Play

Energy from respiration Student activity Play

Energy in a food chain Student activity Play

Energy in chemical reactions Student activity Play

Energy in elastic collisions Student activity Play

Energy in inelastic collisions Student activity Play

Energy in modern society Student activity Play

Energy in nuclear reactions Student activity Play

Energy levels Student activity Play

Energy levels Student activity Play

Energy losses Student activity Play

Energy losses Student activity Play

Energy losses Student activity Play

Energy of a pendulum ball Student activity Play

Energy of electromagnetic radiation Student activity Play

Energy pollution Student activity Play

Energy released during fission Student activity Play

Energy resources Student activity Play

Energy sources and cell respiration Student activity Play

Energy spectrum of a black body Student activity Play

Energy transfer Student activity Play

Energy transfer Student activity Play

Energy transfer Student activity Play

Energy transfer during chemical reactions Student activity Play

Energy transformations in an electrical circuit Student activity Play

Energy, power and intensity of a wave Student activity Play

Energy-saving adaptations Student activity Play

Enlargement Student activity Play