ENERGY

Pepa López Vázquez

INDEX Energy : Thermal energy and sound

energy. Types of energy and energy sources. Wind energy and Solar energy. Non-renewable energy :Oil, Coal and

Natural Gas. Renewable energy : Wind energy and

solar energy. Energy saving tips.

ENERGY Energy is the

ability to produce changes , and can manifest in different ways:

Wind energy. Solar energy. Thermal energy. Sound energy. Power chemistry.

THERMAL ENERGY

Thermal energy is the internal energy of a thermodynamic system in equilibrium that is proportional to absolute temperature and increases or decreases by transfer of energy, usually in the form of heat or work in thermodynamic processes. At the microscopic level and in the framework of the kinetic theory, is the total of the average kinetic energy present as a result of the random motions of atoms and molecules or thermal agitation, which disappear at absolute zero.

SOUND ENERGY Sound energy is the energy that

transmit sound waves or transported. It comes from the vibrational energy of sound focus and spreads to the media particles traversing as kinetic energy and potential energy. When leaving the sound propagating through the medium, the energy is transmitted to the speed of the wave, but a part of the sound energy is dissipated as energy thermal. The acoustic energy usually have low absolute values, and its unit as it is the joule. Although it may be calculated from other quantities as sound intensity, it can also be related to calculate other quantities such as density or acoustic energy flow.

TYPES OF ENERGY AND ENERGY SOURCES The energy sources are more or less complex

fixed elaborations which humans can extract energy to perform a particular job or get some use. For example : wind, water and sun.

Energy can manifest itself in different ways: in the form of motion (kinetic ) position ( potential) , heat , electricity , electromagnetic radiation , etc.

NON-RENEWABLE ENERGY

Non-renewable energy such as:

Oil Coal Natural gas

OIL Substance composed of a

mixture of hydrocarbons, dark color and strong odor, black and lighter than water, which is found naturally in underground reservoirs in the upper layers of the earth's crust; Fractional distillation gives the product of great industrial importance as gasoline, kerosene, tar, solvents, etc.

COAL Solid, light, black

and fuel resulting from the distillation or incomplete combustion of wood or other organic bodies.

NATURAL GAS Natural gas is a major

source of fossil energy released by combustion. It is a mixture of light gaseous hydrocarbons extracted either from separate sites (free gas), or with coal or oil fields (associated with other hydrocarbon gases and gas).

RENEWABLE ENERGY It is called renewable energy to

the energy obtained virtually inexhaustible natural sources, either by the immense amount of energy they contain, or because they are able to regenerate by means lifelike. Among renewable energy as wind, geothermal, hydroelectric count , tidal, solar, wave, biomass and biofuels.

Wind power. Solar energy.

WIND ENERGY Wind power is a

variable of solar energy, because it is derived from heating the atmosphere and irregularities of relief of the earth's surface.

SOLAR ENERGY Solar energy is a

renewable energy, obtained from the use of electromagnetic radiation from the sun.

ENERGY SAVING TIPS

I think we should not allow ourselves the lights or turn them off when you're not using. Also we would help the planet if not spend so bathing water when a shower is spent almost half, or that everyone will use light bulbs that pollute less ...

THE END