PHY152H1 Chapter Notes - Chapter 21: Open-Pit Mining, Hot Air Balloon, Wind Turbine
Document Summary
8. 1 energy degradation + power generation energy can only be transferred by doing work or transferring thermal energy. Fuels a substance that can release energy by changing its chemical/ nuclear structure engine. Degradation of energy energy becomes more spread out/ disordered thermal energy is the most degraded form of energy convert thermal to mechanical some must be transferred to the cold surroundings all energy eventually turns to heat. Sankey diagrams di erent ways of producing useful energy. Car engine: electric motor: width proportional to amount of energy owing. Fusion fuel hydrogen extracted from water non-renewable a lot o water only little hydrogen required to produce large amount of energy. Hydroelectric power sun heats water, turns it into water vapour vapour produces clouds which lead to rain water rains onto mountain- water has high pe energy can be made to do work as water runs down mountain.
