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he capacity or power to do work, such as the capacity to move an object (of a given mass) by the application of force. Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another.

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Force Definition. In science, force is the push or pull on an object with mass that causes it to change velocity (to accelerate). Force represents as a vector, which means it has both magnitude and direction.

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Fossil fuel. ... Fossil fuel is a general term for buried combustible geologic deposits of organic materials, formed from decayed plants and animals that have been converted to crude oil, coal, natural gas, or heavy oils by exposure to heat and pressure in the earth's crust over hundreds of millions of years.

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In physics, the kinetic energy (K E) of an object is the energy that it possesses due to its motion. It i s defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

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renewable resource any resource such as wood solar energy that can or will be replenished naturally in the course of time.

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Potential energy is a type of energy an object has because of its position. ... This is the opposite of kinetic energy — energy derived from something currently in motion. Something with potential energy is in a position to get moving and is just waiting for a push or shove to do its thing.

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Radiation Definition. Radiation is the emission and propagation of energy in the form of waves, rays or particles. ... Non-ionizing radiation: This is the release of energy from the lower-energy region of the electromagnetic spectrum. This includes light, radio, microwaves, infrared (heat), and ultraviolet light.

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Thermal energy is the internal energy of an object due to the kinetic energy of its atoms and/or molecules. The atoms and/or molecules of a hotter object have greater kinetic energy than those of a colder one, in the form of vibration, rotational, or, in the case of a gas, transnational motion.

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In science, the word work has a different meaning than you may be familiar with. The scientific definition of work is: using a force to move an object a distance (when both the force and the motion of the object are in the same direction.)

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In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain.

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Power. physics. Power, in science and engineering, time rate of doing work or delivering energy, expressible as the amount of work done W, or energy transferred, divided by the time interval t—or W/t. A given amount of work can be done by a low-powered motor in a long time or by a high-powered motor in a short time.