# Energy

In Glogpedia

Last updated 5 years ago

Discipline:
Science
Subject:
Energy & Environment
5,6,7

ENERGY

The first law states that energy cannot be created or destroyed which means nothing can be new and nothing can be changed or disapear.

The third law states that regarding the properties of systems in equilibrium at absolute zero temperature: The entropy of a perfect crystal at absolute zero is exactly equal to zero. Which means that energy can never be absolute zero, it can be close but never will be.

thermodynamics- he branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy.

The second law states that the entropy of any isolated system not in thermal equilibrium almost always increases. which means that it is impossible to repeat and it is impossible to transfer heat into cold without work being done, so no recation is 100% effecient, it cant convert all its energy to working energy and it states that the system must put work in some work for it to happen

1st law of thermodynamics

2nd law of thermodynamics!

3rd law of thermodynamics

absolute zero- he lowest temperature that is theoretically possible, at which the motion of particles that constitutes heat would be minimal. It is zero on the Kelvin scale, equivalent to –273.15°C or –459.67°F.

entrophy-a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system.

temperature- a measure of the KE of particles

heat- transfer of KE

calorie- a unit of heat used to indicate the amount of energy that foods will produce in the human body

energy- the ability to do work

potential energy- the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.

kinetic energy-the energy of a moving object

exothermic- (of a reaction or process) accompanied by the release of heat.

endothermic- (of a reaction or process) accompanied by or requiring the absorption of heat.

thermal expansion- an increase in volume because of heating

thermal contraction- a decrease in volume because of cooling

radiation- the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.

convection- the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

conduction- the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.

Vocab words and definitions