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Geography 3. Social sciences, geography
EduBook Organización
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- 11386 visitas
1. The Earth's surface: shaping human activity 2. The Earth's climate zones 3. The political organisation of society 4. The European Union 5. Spain: politics and territory G. Glossary 6. The economic…
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The Earth's Crust
EduBook Organización
- 10857 visitas
There are two large important areas on the surface of our planet: the continents, which constitute solid ground, and the seas and oceans. The continents and the ocean floor are formed of rocks. These…
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Kinds of relief - The Earth's relief
EduBook Organización
- 8043 visitas
The combined action of internal and external forces shapes the surface of the Earth. The result is different kinds of relief. Mountains are a good example of a kind of relief that can condition human…
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The representation of the Earth: maps
EduBook Organización
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- 7768 visitas
In the past, cartography (or map making) was a very slow process. It involved observation and complex calculations and drawings. Modern maps are made using aerial photos and images from satellites…
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Internal forces in the formation of relief
EduBook Organización
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2.1. Internal forces Below the surface of the Earth, gases and compressed materials put pressure on the crust. They can deform it or make it crack. These internal forces are what cause earthquakes and…
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External forces in the formation of relief
EduBook Organización
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3.1. External forces Relief is not only the result of movements inside the Earth. External forces, such as the effect of water or wind, can also change the shape of the planet's surface. The action…
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The Atmosphere
EduBook Organización
- 6923 visitas
The Earth is surrounded by a mixture of gases we call the atmosphere. The air we breathe is part of the atmosphere. The atmosphere is composed of a series of layers. The most important layer is the…
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The representation of the Earth: maps
EduBook Organización
- 6046 visitas
2.1. Maps Maps are flat representations of the Earth's surface. To read and interpret a map we need to know its basic elements: scale and conventional signs. Scale Scale indicates how many times the…
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Unit 4: Rivers and seas
EduBook Organización
- 6010 visitas
Desalination plant (n): a factory that converts salt water into fresh water. erosion (n): the process of weathering and transportation of materials by a river. flow (n): the amount of water a river…