Our planet Earth
Most of the Earth is made up of the geosphere. This is a large sphere of rock with a diameter of 13000 km. A large part of the geosphere is covered by the hydrosphere. This is a layer of liquid water that forms seas, oceans, lakes and rivers. It is relatively thin, just 4 km on average. Above the geosphere and hydrosphere, there is a layer of gases called the atmosphere. It is also very thin, just tens of kilometres high. [...]
Esta secuencia contiene:
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9 actividades
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60 recursos
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Idioma:
- Inglés
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Formato:
Interactivo
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Secuencia didáctica
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Didactic objectives Recognise the three parts of our planet: the geosphere, hydrosphere and atmosphere. Describe the layers of the geosphere: the crust, the mantle and the core. Identify the tectonic plates on the Earth’s surface. [...]
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1. The geosphere Most of the Earth is made up of the geosphere. This is a large sphere of rock with a diameter of 13 000 km. The rocks on the surface of the geosphere are hard and dense. They are made up of minerals. [...]
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Most of the Earth is made up of the geosphere. This is a large sphere of rock with a diameter of 13000 km. A large part of the geosphere is covered by the hydrosphere. This is a layer of liquid water that forms seas, oceans, lakes and rivers. [...]
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What is the geosphere made of? The geosphere is made up of rocks. Rocks are natural materials. They are usually hard and dense, and are made up of chemical substances called minerals. [...]
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The Earth's surface is constantly changing. Most of these changes happen over millions of years. As a result, we do not notice them. These changes are called geological forces. [...]
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External geological forces The main external geological forces are water, ice and wind. [...]
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Types of rocks The Earth's crust is made up of three types of rock: igneous, sedimentary and metamorphic. Igneous rocks are formed when magma (a rock in a liquid state) cools. [...]
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Most of the Earth is made up of the geosphere. This is a large sphere of rock with a diameter of 13000 km. A large part of the geosphere is covered by the hydrosphere. This is a layer of liquid water that forms seas, oceans, lakes and rivers. [...]
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Most of the Earth is made up of the geosphere. This is a large sphere of rock with a diameter of 13000 km. A large part of the geosphere is covered by the hydrosphere. This is a layer of liquid water that forms seas, oceans, lakes and rivers. [...]
Cursos y asignaturas
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