La cámara de gas

(...) En apariencia, era una inofensiva sala de duchas: techumbre de mosaico, paredes con un friso de azulejos y unas bombillas blancas muy potentes colgadas del techo. De un emparrillado de tubos…

La alternancia en el poder

A partir de las primeras elecciones libres del posfranquismo, España ha vivido el ciclo político democrático más largo de su historia. Esta etapa se ha caracterizado por la alternancia en el…

Las funciones comunicativas del lenguaje

Las funciones comunicativas del lenguaje La comunicación

Relatiu amb antecedent global

Relatiu amb antecedent global Oracions subordinades adjectives

La literatura en la edad media (II)

Final Autoevaluation 1.01 - Plant nutrition

J. van Helmont's experiment Van Helmont (1577-1644), a Flemish doctor and chemist, thought that in addition to water, air and substances in soil, other elements must be necessary for plant…

Analyse. The illustrations

Having looked carefully at these two scenes, analyse the advantages and disadvantages of modern technological society from the point of view of energy use.

The propagation of heat

Heat transfers from a hot object to a cold object by means of three mechanisms: conduction, convection and radiation. 6.1. Conduction Heat is transmitted through solid substances by conduction (figure…

The nature of light

2.1. What is light? Light has an undulatory nature; this means it is made up of waves. Visible light (that can be seen by the human eye) belongs to a larger group of waves called electromagnetic waves.…

Answer. Light, shadow and penumbra

Remember what you have studied in this section and answer the questions: What is a light ray? Light gives off energy. Give an example of something that shows this.