Formas de transmisión de calor.

• The heat can be transmitted of three different forms:
• Thermal conduction: it is when a thermal contact takes place between 2 or more bodies, due to the direct contact between the individual particles of the bodies that are to different temperatures, which it produces that the particles come to a thermal balance. Ej: metallic spoon in the cup of tea.
• Thermal convection: only it takes place in liquids or gases. The heat transport is joined to the movement of the way. Ej.: the heaters inside the house.
• Thermal radiation: it is the process by which it is transmited across electromagnetic waves. Ej.: The solar power.

Contaminacion

stage of matter

The matter is all that that surrounds us, a place and a space occupies in the universe, and that we are capable of identifying and knowing.
The matter presents two types of properties: extensive properties and intensive properties:
-The extensive properties are those that we can measure with major facility and that depend on the quantity and form of the matter.
-The intensive properties can serve to identify and to characterize a pure substance, that is to say, that one that is composed by an alone type of molécula como, for example, the water, which is formed only by water molecules (H2O), or the sugar, which alone her molecules of saccharose shape.

MAPAS

Es una representación gráfica y métrica de una porción de territorio generalmente sobre una superficie bidimensional pero que puede ser también esférica como ocurre en los globos terráqueos. El que el mapa tenga propiedades métricas significa que ha de ser posible tomar medidas de distancias, ángulos o superficies sobre él y obtener un resultado aproximadamente exacto.