1 Energy ######## Energy changes in a system, and the ways energy is stored before and after such changes *************************************************************************************** Energy stores and systems ========================= Fluff Changes in energy ================= Fluff Energy changes in systems ========================= Fluff Power ===== Fluff Conservation and dissipation of energy ====================================== Fluff Energy transfer in a system =========================== Fluff Efficiency ========== Fluff National and global energy sources **********************************