Concepto de frente de ondas

Concept of particle in an infinite well

The educational resource shows information about the concept biomass energy and its advantages and its disadvantages.

The educational resource shows information about the coal: coal is a light, black substance which comes from the fossilization of vegetable matter. Coal is used as an industrial fuel, in power stations and in home heating. There are 4 types of coal: anthracite, bituminous coal, lignite and peat.You can see how they are formed in the following animation.

The educational resource shows information about the concept of chemical energy: chemical energy is what is produced in chemical reactions. An energy cell or a battery possess this type of energy. The gas burning in a cigarette lighter shows how the chemical energy contained in the gas is transformed into light and heat.

Energy from fossil fuels (coal, oil and natural gas) comes from substances which originated from the accumulation, millons of years ago, of large quantities of remains of living beings at the bottom of lakes and other sedimentary depressions. By clicking on the following controls you can learn more about each one of these fuels.

The electricity consumption

Concepto y descripción de los fusibles

Concept of density. Performing calculations.

Concepto de segunda ley de la desintegración radiactiva. 2ª Ley de Soddy

Concept of half-life

Concept of instantaneous velocity

Concepto de factores de conversión. Fracción en la que el numerador y el denominador valen lo mismo (son valores iguales expresados en unidades distintas)

The area of the graph between the curve F and the X axis, represents the work carried out by the force between the two positions x0 and x. Review how to use the following visual and carry out the two proposed activities for a better understanding.

Concept of frame of reference

The lines of force in magnetic fields.

The educational resource shows a visual about the intensity of the electric field: What are the lines of force in a field created by two electric charges?

Magnetic field on the inside and near the poles of a long solenoid.

The educational resource shows a visual about the graphically represent the electric field: we use the concept of lines of force.

Concepto de observación