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# Law of Conservation of Energy

The Law of Conservation of Energy states that energy cannot be created or destroyed, only transferred or converted from one form to another

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## Law of Conservation of Energy

The Law of Conservation of Energy means that the total amount of energy in a closed system (like the Earth) will always stay the same.

For example, when you ride a bike, the energy you put into pedaling is converted into the energy that makes the wheels move.

But that energy doesn’t just disappear, it is still there in the form of heat and sound energy.

Another example is a rollercoaster. As the rollercoaster goes uphill, it gets higher and higher in potential energy. When it goes downhill, it loses potential energy but gains kinetic energy (energy of motion).

The total amount of energy stays the same, it’s just being converted from one form to another.

So, in simple terms, the law of conservation of energy states that energy cannot be created or destroyed but can be converted from one form to another and the total amount of energy remains constant.

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## Law of Conservation of Energy FAQS

##### What is the law of conservation of energy?

The law of conservation of energy is the principle that energy cannot be created or destroyed, only transferred or converted from one form to another.

##### How is the law of conservation of energy related to the first law of thermodynamics?

The first law of thermodynamics, also known as the law of energy conservation, is essentially the same as the law of conservation of energy. The first law states that the total energy in a closed system is constant.

##### Can energy be lost in a system?

Energy cannot be lost in a closed system, but it can be transferred or converted from one form to another. For example, in a car engine, the chemical energy in gasoline is converted into heat and kinetic energy to move the car.

##### What are some examples of energy conservation in everyday life?

Examples of energy conservation in everyday life include turning off lights when not in use, using energy-efficient appliances, and walking or biking instead of driving.

##### How does the law of conservation of energy apply to living things?

The law of conservation of energy applies to living things in the sense that the energy they consume must come from somewhere. For example, plants convert sunlight into chemical energy through photosynthesis, which is then used to fuel their growth and reproduction. Animals, in turn, consume plants or other animals to obtain energy.

Kathleen Currence is one of the founders of eTutorWorld. Previously a middle school principal in Kansas City School District, she has an MA in Education from the University of Dayton, Ohio. She is a prolific writer, and likes to explain Science topics in student-friendly language. LinkedIn Profile

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