The natural environment

1.1. The energy of the sun and life The ecosphere is a hypothetical zone existing around any star where the temperature allows life to exist. The conditions which make it possible for life to exist on…

Observe. The periodic table and chemical formulas

Look at the photos and answer the questions: Look at figures 1-3. Say which elements are present in each compound and how many atoms there are of each. Which of these compounds is used as fuel?

Sound

6.1. What is sound? Sound is the propagation of vibrations and energy in a straight line and in all directions. It travels from the source of sound to the receptors. Unlike light, sound needs a material…

Complete. The economy expansion

Complete the sentences about economic expansion with the missing words: In the late 19th century, the low price of produced in the Americas caused an agricultural in Europe. The crisis was particularly…

The driving factors behind imperialism

1.1. Europe's dominance In the last few decades of the 19th century, the Second Industrial Revolution transformed the economies of the leading European powers. Great Britain, France, Belgium and…

El colegio

Melodía popular

Melodía popular La música culta

History

History CLIL

Evaluación Inicial 2 - Ecuaciones

Resuelve la ecuación 3x + 5 = 1. x =

Problemas de ecuaciones de primer grado. Actividad 7

Para organizar una excursión de un grupo de amigos, cada uno ha puesto 15 €. Si hubieran sido tres más, solo hubieran tenido que poner 12 €. ¿Cuántos amigos han ido a la excursión? Han ido amigos.