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Think about it. What plants need

Remember what you have studied in this section and answer the questions: Why do plants sometimes need fertilisers to grow well? How does the way trees and animals get food differ? Which are autotrophs…

Analyse a photograph

This photo shows an eruption of Mount Etna, in Sicily. Describe what you see in the photograph. Notice the lava flowing down the mountainside. What is it like? Do you think there could be any towns or…

Check. Materials that conduct and insulate heat

Remember what you have studied in this section and answer the questions: What are the three ways by which heat is propagated? Give one example of each. Does matter move in convection? And in radiation?…

Calculate. The nature of light (1)

Calculate how far light travels in air in 20 s. In 20 s, light will travel .

Unit 9: Motion and forces

Accelerate (v): to go faster; to increase in velocity. apparent weight (n): the total sum of forces acting on a body. area (n): a quantity which expresses the extent of a twodimensional surface.…

Describe. United States and the crisis of 1898

Look at the illustration and answer the questions: What conflict is depicted in this cartoon? What caused it? Describe the characters and the action. Explain the symbolism. What do the teeth represent?

Describe. The consequences of the First World War

Describe the picture. What does it tell you about the artist's view of war and its consequences?

Unit 12: Spain under Franco (1939-1975)

Autarky (n): economic self-sufficiency, requiring no imports from outside. black market (n): a system where goods are bought and sold illegally outside official channels. Blue Division (n): a unit of…

El Buscón, de F. [...]

El Buscón, de F. DE QUEVEDO La literatura barroca: la lírica y la prosa