According to the second law of thermodynamics, energy flows in the direction of increasing randomness. This randomness is quantified as entropy, a universal value that always increases due to the inescapable dissipation of energy.Know More
Each time energy is transferred or transformed in an open system, some of this energy is lost in the form of random thermal vibrations called heat. Starting with a fixed amount of useful energy, the total amount of energy available to do work decreases until eventually all of this energy has dissipated as heat. Even if this resulting heat energy is trapped in a system, there is no way to restore it to its former form of useful energy without expending more than the original amount of energy.
As a result, energy always flows from more complex forms to less complex ones and from more concentrated forms to less concentrated ones. The flow of thermal energy from a higher temperature to a lower one or the flow of electrical energy from a higher voltage potential to a lower one are both illustrations of this. Even chemical reactions are subject to this law of thermodynamics, in which the total bond energy of the reactants of a spontaneous reaction is always less than the bond energy of the products.Learn more about Thermodynamics
Pyroclastic flows travel away from a volcano's vent at speeds up to 150 kilometers per hour. They contain hot gas, ash and rock at temperatures ranging from 100 to 800 degrees Celsius.Full Answer >
An energy pyramid is a graphical representation of how energy flows in an ecosystem The pyramid consists of trophic, or nutritional, levels. It shows how energy decreases and becomes less available for organisms as it enters every trophic level, as well as the amount of energy lost to the atmosphere in the form of heat.Full Answer >
Thermal energy is used to describe energy in a heated form. Thermal energy is transferred in three different ways: radiation, conduction and convection.Full Answer >
Thermal energy is the energy that a system or object possesses due to the random movement of its particles. When more particles are present, there is more movement, which results in more thermal energy.Full Answer >