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- Integrales
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Newton's law of gravitation
EduBook Organización
- 2519 visitas
Basing his work on many different kinds of experiments, the English physicist Sir Isaac Newton (1642 – 1727) established the law of gravitation. The law of gravitation states that the greater the…
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Why do boats float?
EduBook Organización
- 2521 visitas
If we make a little boat out of a walnut shell, we see that it floats and we relate this to the fact that the walnut shell is less dense than water. But what about real boats? Some of them are huge,…
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Check. Simple machines
EduBook Organización
- 2512 visitas
Remember what you have studied in this section and answer the questions: Give the names of some simple machines and say how they work. The lever is one of the most commonly used simple machines. Mention…
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Match. Eclipses
EduBook Organización
- 2511 visitas
Match the sentences: In a solar eclipse, the areas of the Earth where the eclipse shadow is cast is complete, … When the Earth moves between the Sun and the Moon… A total eclipse of the Sun… The…
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Light and colours
EduBook Organización
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5.1. The composition of white light White light is actually made up of many colours. We can see this if we pass white light through an optical prism (figure 1). 5.2. The colours of objects When white…
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Summaries - Liberal revolutions and nationalist movements (1789-1871)
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1. Liberalism and nationalism Liberalism is both an ideology and a political and economic doctrine based on a set of principles: The citizens posess national sovereignity and choose representatives by…
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Six years of democracy (1868-1874)
EduBook Organización
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6.1. The 1868 Revolution As Isabella II's monarchy became more unpopular, political parties joined forces to avoid marginalisation. In 1866, the progressive Liberals, the Democrats and the Liberal…
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Complete. Caciquism
EduBook Organización
- 2528 visitas
Complete the sentences about caciquism and bipartisanship with the missing words: The alternation of parties in power was only possible thanks to a electoral system based on the local control of . The…
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Check. Population and agriculture in the 19th century
EduBook Organización
- 2522 visitas
Remember what you have studied in this section and answer the questions: What migrations, internal and external, occurred during the 19th century? What population changes took place? What areas…
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The Spanish economy in the late 19th century
EduBook Organización
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4.1. The agricultural crisis of the late 19th century In the late 19th century, the low price of cereals produced in the Americas caused an agricultural crisis in Europe. The crisis was particularly…