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Recursos educativos
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End-of-unit activities - The Universe and our Solar System
EduBook Organización
- 3100 visitas
Since ancient times, humans have tried to explain the nature of the Universe. For centuries it was thought that the Earth was a flat surface. People believed that everything in the sky rotated around…
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End-of-unit evaluation - The representation of the Earth: maps
EduBook Organización
- 3067 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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Self-evaluation 2 - Weather and climate
EduBook Organización
- 3076 visitas
Which concepts do the following definitions refer to?: It is the degree of warmth in the air due to solar radiation. It is a gaseous layer more than 1 000 kilometres thick that surrounds the Earth. It…
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Introduction - Water
EduBook Organización
- 3017 visitas
Water covers a lot of the Earth's surface. We can find water in oceans, seas and rivers. We can also find water in clouds and in snow on mountains. All living things need water. All animals need…
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End-of-unit activities - The representation of the Earth: maps
EduBook Organización
- 2923 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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The Earth's relief
EduBook Organización
- 2937 visitas
5.1. The relief of the continents The surface of the continents is not smooth or uniform. The relief includes mountains, plains, plateaus and valleys. Islands in the oceans and seas can be part of the…
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Ocean dynamics
EduBook Organización
- 2918 visitas
3.1. How oceans and seas move The water in oceans and seas is always moving because of waves, tides and ocean currents. Waves Waves are caused by wind moving the water on the surface of the sea. The…
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Calculate. Force and pressure
EduBook Organización
- 2895 visitas
Remember what you have studied in this section and answer the questions: What pressure is exerted on the ground by a person with a mass of 80 kg wearing skis with a total surface area of 0.6 m2? We have…
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Rock types
EduBook Organización
- 2844 visitas
Sedimentary rocks Common salt is made when sea water evaporates. It is extracted from salt mines. Sandstone is a sedimentary rock made up of grains of sand that are held together by other mineral…
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The beginning of life
EduBook Organización
- 2826 visitas
1.1. The Earth, our planet The Earth is the only planet in the Solar System that has all of the conditions for life to develop. These conditions are the following: Its size, which allows the force of…
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