All about rocks

The aim of this report is to explain 3 kind of rocks: the metamorphic, the sedimentary and the igneous.

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How and where are they formed?

 They have a very different way of being produced. The metamorphic rock is formed underground, in this rock, the molecular structure change because of the pressure, heat and chemical reactions. They can usually be found in mountainous regions.

 The sedimentary rock is formed in the seabed by sediments. They are accumulated in layers; the sediments from the bottom are compressed by the above ones joining them and creating the rock. They are found covering the majority of the Earth's upper crust.

 The igneous rock is formed when magma from the volcanoes rises up and cools. Because of this, they are found around areas where volcanic activity is done.

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What they are used for?

 Metamorphic rocks are used for roofing material, decorative garden stone, the base for snooker tables, building material, sculpture material and paving material.

 The sedimentary rock is normally used for constructions, slabs, steel and cement.

 The igneous rocks can be found in constructions because of their durability.

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Conclusion

Rocks are very important in our daily lives. They are very important to geology too, to know more about the past. But we have to take care of them because if we overexploit minery, there will not be rocks in the future.