Physical Science is the study of energy-- The following all have to do with energy: speed momentum force work power atoms and molecules density etc….
Law of Conservation of Energy energy cannot be created nor destroyed by ordinary means it is just changed from one form to another Einstein took this law farther by realizing that if matter is destroyed, energy is created and if energy is destroyed, mass is created E=mc 2 Question-- then why bother to conserve energy?
all forms of energy can be converted to other forms (mechanical, heat, chemical, electric, electromagnetic, and nuclear) example: the chemical energy from the gas in a car changes into mechanical and heat energy as the car moves. example: plants convert electromagnetic energy (light) to chemical energy (sugar) with photosynthesis often KE will be converted into PE and vice-versa Converting Energy
Energy Conversion Example What energy transformations must happen to light a light bulb? mechanical energy from the water in a river moves a turbine in a dam that makes … electrical energy in the light bulb that changes to…heat energy and light energy that we can see and feel.
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