The reflection of sound

7.1. Reflection of sound Sound is transmitted in a straight line. When it meets obstacles that it cannot cross, like a wall or a rock, it is reflected back in the other direction. Two phenomena caused…

Learn. Noise pollution - Waves. Light and sound

Noise pollution Noise pollution is when there are sounds that are too intense and prolonged in a certain place. For example, sounds with an intensity higher than 55 decibels make it difficult for people…

Look. Methods of industrial concentration

Look at the different types of industrial concentration and explain the main characteristics of a trust, a cartel and a holding.

Final self-evaluation T07 03 - Art in the 19th century

Choose the correct answer: A new painting technique that appeared during the Rococo period. Important Spanish Rococo painter. Neoclassical painter. Neo-Gothic architect. Artist who painted The Card…

Look. The economic crisis

Look at the map. In which country did the economic crisis begin? Where did it spread to?

The debate over women's suffrage

Decide what you like, but you must recognise your responsibility to allow this half of the human race to enter politics, so that politics are for both genders, because there is only one thing that men…

Check. The United States: leader of the capitalist world

Remember what you have studied in this section and answer the questions: Make a concept map to present the factors that led to the rise in power of the United States. What were America's post-war…

Check. The end of Francoism (1973-1975)

Remember what you have studied in this section and answer the questions: Analyse the effects of the oil crisis on the Spanish economy. Create a concept map. How did Francoism evolve politically between…

Interpret. Public DEBT in the Eurozone in 2010

Look at the graph and answer the question: Which countries had the greatest public debt in 2010? In which countries was the public debt more/less than 40%? Was Spain's debt larger than Austria's?

Del Existencialismo al Realismo social