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Rocks by Daniel, Ada, Aniel and Alonso

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Vocabulary, rocks, lithosphere, genus rocks, magma, sedimentary rocks, sediments, layers,

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metamorphic rocks.

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Rocks, the lithosphere is the solid outer layer of the earth.

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The lithosphere is made up of two layers, the crust and the mantle.

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The upper layer is the crust, which is solid rock.

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Underneath the crust we find the mantle, where it is hotter and rocks are more fluid.

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Rocks are made of one or more minerals.

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We can classify rocks in three types.

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According to how they are formed, in genus rocks, sedimentary rocks, metamorphic rocks.

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In genus rocks, in genus rocks are formed the solidification of solid magma.

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Magma is a liquid and very hot rock that we can find deep inside the earth's crust.

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Magma can cool down inside the earth's crust and form in genus rocks such as the granite.

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This magma can also go up to the surface in a volcanic eruption.

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This is called lava.

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When the lava cools, it forms in genus rocks such as the basalt.

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Sedimentary rocks. Sedimentary rocks are rocks made from sediments.

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Sediments are the layers of rocks, sand, sandstone and remains of living things deposited over time.

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Over a very long time, these sediments get compact until they form a rock.

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Sometimes these sedimentary rocks have fossils of animals or plants.

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Some examples of sedimentary rocks are luteum, clay or soil.

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Metamorphic rocks. Metamorphic rocks started as igneous or sedimentary rocks.

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Due to its pressure or heat, these rocks turned into metamorphic rocks.

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Mable is a metamorphic rock that is formed when limestone changes due to heat or pressure.

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Slate is also a metamorphic rock.

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Thanks for listening!

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