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## Energy Transformations & Conservation

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**Energy Transformations & Conservation**http://www.youtube.com/watch?v=iotBJt2MaQM Niagara Falls Mechanical energy is transformed into electrical energy!**Energy Transformations**• A change from one form of energy to another form of energy. • Many forms of energy can be transformed into other forms.**Single transformations**A toaster transforms electrical energy into thermal energy What type of energy transformation is happening here?**Single transformations**What type of energy transformation is happening here?**Multiple transformations**• Mechanical energy • Thermal energy • Electromagnetic energy**Transformations between potential and kinetic energy**• Niagara Falls**Energy transformation in juggling**• Explain how energy is transformed when juggling**Wile E. Coyote vs. Roadrunner**• https://www.youtube.com/watch?v=Jnj8mc04r9E • https://www.youtube.com/watch?v=i6e-KrNCe_E**Energy transformation in a pole vault**• What kind of energy lifts a pole-vaulter over the bar?**Law of Conservation of Energy Songs**• https://www.youtube.com/watch?v=_uLSFigtLKg • https://www.youtube.com/watch?v=k60jGJfV8oU**Law of Conservation of Energy**• Energy cannot be created or destroyed, but it can be change from one form to another. • No energy is destroyed in the process of energy transformation.**Energy and friction**• If you set a spinning top in motion, will the top spin forever?**Energy and friction**• Mechanical energy is transformed into thermal energy • Friction= force one surface exerts on another when two surfaces rub together • fricción • Rub your hands together. What happens?