Energy is a conserved quantity that can be transferred and transformed from "summary" of Physics 11 by British Columbia. Schools Department. Curriculum Development Branch
The principle that energy is conserved is fundamental in physics. This means that energy cannot be created or destroyed, only transferred or transformed from one form to another. When energy is transferred from one object to another or transformed from one type to another, the total amount of energy remains constant. This conservation of energy allows us to track how energy moves and changes throughout a system. Energy can be transferred in various ways, such as through heat, work, or radiation. For example, when a hot object comes into contact with a cold object, heat energy is transferred from the hot object to the cold object until they reach thermal equilibrium. Similarly, when a force acts on an object to move it a certain distance, work is done on the object, transferring energy to it. Energy can also be transformed from one form to another. For instance, the potential energy stored in an object at a certain height can be transformed into kinetic energy as the object falls. This transformation of energy can occur in many different ways, such as chemical energy being transformed into light and heat energy in a fire, or electrical energy being transformed into sound and light energy in a speaker. Understanding that energy is a conserved quantity that can be transferred and transformed is crucial in analyzing physical systems. By keeping track of how energy moves and changes within a system, we can predict outcomes, solve problems, and better understand the natural world around us. This concept serves as a foundational principle in physics and allows us to make sense of the complex interactions of energy in our everyday lives.
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