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Introduction - The Earth's Crust
EduBook Organización
- 5167 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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End-of-unit evaluation - The Earth's Crust
EduBook Organización
- 5095 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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The Earth is an ecosystem
EduBook Organización
- 4756 visitas
1.1. The elements of the Earth's ecosystem Planet Earth is made up of four interrelated elements: The lithosphere, or the Earth's surface. The hydrosphere, or all of the water on the planet. The…
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Atmospheric pressure and wind
EduBook Organización
- 4636 visitas
4.1. Atmospheric pressure Atmospheric pressure is the weight or force that the air exerts on the surface of the Earth. Atmospheric pressure depends on: Altitude: the higher the altitude, the lower the…
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Summaries - Energy inside the Earth
EduBook Organización
- 4613 visitas
1. Manifestations of the Earth's internal energy The surface of the Earth is cold, but we can see some evidence of the heat inside; for example, hot springs and volcanoes. This heat is due to…
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Self-evaluation 7 - Rivers and seas
EduBook Organización
- 4601 visitas
Which concepts do the following statements refer to: Rise and fall of sea levels caused by the Moon's magnetic influence on the waters of oceans and seas. Permanent body of water deposited in a…
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Introduction - The Hydrosphere
EduBook Organización
- 4498 visitas
The hydrosphere is the part of the Earth where water can be found. This water includes oceans, seas, rivers, lakes, snow, ice, groundwater and water vapour in the atmosphere. The Earth is the only…
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Forces in everyday life. Equilibrium
EduBook Organización
- 4264 visitas
5.1. Motive force Motive force, Fm, is the force which makes an object move. For example, the force exerted by the engine of a plane which allows the plane to fly. 5.2. Friction Friction, Ffrict, is the…
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Activities - Water
EduBook Organización
- 1 lo usan
- 3991 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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