Investiga. Las mujeres y la primera guerra mundial

La guerra otorgó a las mujeres un nuevo papel en la sociedad. Para colaborar con el esfuerzo bélico, empezaron a trabajar en las fábricas de armamento, en los hospitales, en la conducción de…

Sabías que…

Los bolcheviques pensaban que para el triunfo de la revolución en Rusia era necesaria la expansión de la revolución por Europa. En 1919 fundaron en Moscú la III Internacional o Internacional…

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…

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.

Choose. Political system of the United States

Decide whether each sentence refers to England or the United States: The Bill of Rights limited the power of the king. The 1789 Bill of Rights guaranteed freedoms for all citizens. A federal government…

Carlism

People of Alava: the day has finally arrived when liberal disloyalty must be banished from Spain forever. (...) Its condemnation of our Holy God; the freedom of thought; immorality; revenge; theft;…

Complete. Absolutism and liberalism

Complete the following sentences with the missing words: feudal system – Holy Alliance – Constitution of Cádiz – Inquisition – Salic Law – repressed – Colonel Riego – Liberal Triennium…