The energy transitions from the water behind a hydroelectric dam to the illumination of a light bulb have a sequence number of 1,2,4,3.
According to the law of conservation of energy, the energy of an isolated system stays unchanged throughout time; it is said to be conserved.
Energy cannot be created nor destroyed and can be transferred from one form to the other form.
The number of energy conversions from the water behind a hydroelectric dam to the illumination of a light bulb is;
1. Rain falls, being trapped behind dams
2. Energy transferred to home to power light bulb.
4. Potential energy of water behind dam converted into kinetic energy by turning turbines.
3. Turbines generate electrical energy
Hence the sequence number of the energy transformations is 1,2,4 and 3.
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