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End-of-unit activities - The Universe and our Solar System
EduBook Organización
- 3716 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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Introduction - The representation of the Earth: maps
EduBook Organización
- 3722 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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Ocean dynamics
EduBook Organización
- 3654 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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Introduction - Water
EduBook Organización
- 3640 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 evaluation - The representation of the Earth: maps
EduBook Organización
- 3602 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
- 3612 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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End-of-unit activities - The representation of the Earth: maps
EduBook Organización
- 3423 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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Calculate. Force and pressure
EduBook Organización
- 3421 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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Complete. The Moon
EduBook Organización
- 3411 visitas
Complete the sentences with the missing words: artificial – atmosphere – heat up – hidden – smaller – satellite – satellites – orbits – 28 – 107 – 173 The Moon is the Earth's…
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Remember - Water
EduBook Organización
- 3301 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…