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?