Think about it. The natural environment

Remember what you have studied in this section and answer the questions: Why does water exist in a liquid state on Earth but not on other planets? What functions does water have for living things?…

Calculate - End-of-unit activities

Calculate the work done by a person who pushes a wheelbarrow for a distance of 100 m if he exerts a force of 500 N. What is the efficiency of a machine which does 230 J of work but uses 410 J of total energy?

Unit 10: Obtaining and using energy

Acid rain (n): rain which is acidic due to the presence of pollutants. balanced (adj): distributed evenly. biomass (n): organic matter used as a source of energy. blade (n): the arm which makes a wind…

Analyse. The English political system

Look at the diagram and answer the questions: Using the diagram to help you, explain why England was not an absolute monarchy. What is the difference between the two Houses? Who elects the Commons? Is…

Summarise. The First World War and the Russian Revolution

Summarise the text. Write paragraph headings. At the beginning of the 20th century, economic rivalry between the nations and the colonies led to an increase in tension amongst the European states. An…

Find out more. The Rif war in Morocco and the Tragic Week

After losing the Spanish-American War in 1898, Spain sought out new territories in Africa. The Algeciras Conference (1906) established a Spanish-French territory in Morocco, with Spain controlling the…

Final evaluation T11 07 - A bipolar world: the cold war and decolonisati...

What is the welfare state?

CLIL

Monomios

Un monomio es el producto indicado de un número por una o varias letras que tienen exponentes enteros no negativos. Por ejemplo, son monomios: Los monomios están compuestos por un número, el…

Indica. Elementos de una ecuación

Indica el primero y el segundo miembros de la ecuación 4x + 2 = 5x + 4. ¿Cuál es su grado? Primer miembro de la ecuación: Segundo miembro de la ecuación: El grado de la ecuación es: