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Energy is essential for all living beings and various activities, derived mainly from the Sun and other sources. The section defines energy scientifically, discusses its forms like kinetic and potential energy, and emphasizes the law of conservation of energy.
Energy is a fundamental concept in science and life, necessary for all physical and biological processes. It is derived from various sources, primarily the Sun, but also from the Earth's interior and the atomic nuclei. Energy exists in multiple forms, including mechanical (kinetic and potential), heat, chemical, electrical, and light energy. The section explains kinetic energy as the energy possessed by moving objects and potential energy as the energy an object has due to its position or configuration. The total mechanical energy of an object is the sum of its kinetic and potential energy. Furthermore, the law of conservation of energy states that energy cannot be created or destroyed but can only change forms, with the total energy remaining constant in an isolated system. This concept is vital in understanding how energy transforms and flows through various systems in nature.
Energy: The capacity to perform work.
Kinetic Energy: Energy due to motion.
Potential Energy: Stored energy due to position.
Conservation of Energy: Total energy remains constant.
Mechanical Energy: Sum of an object's kinetic and potential energy.
Energy's a vital need, sun and food will plant the seed.
Imagine a boy on a swing. As he goes higher, he gathers potential energy, waiting. When he drops, that energy transforms into kinetic energy, making him go faster.
PE - Potential Energy, waiting at heights; KE - Kinetic Energy, in motion, it's light.
A car moving at 60 km/h possesses kinetic energy due to its motion.
A book held above a table has gravitational potential energy due to its height.
Term: Energy
Definition: The capacity to do work or produce change.
The capacity to do work or produce change.
Term: Kinetic Energy
Definition: Energy possessed by an object due to its motion.
Energy possessed by an object due to its motion.
Term: Potential Energy
Definition: Energy possessed by an object due to its position or configuration.
Energy possessed by an object due to its position or configuration.
Term: Conservation of Energy
Definition: The principle that energy cannot be created or destroyed, only transformed.
The principle that energy cannot be created or destroyed, only transformed.
Term: Mechanical Energy
Definition: The sum of kinetic and potential energy in an object.
The sum of kinetic and potential energy in an object.