Rock Cycle

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by frostnat
Last updated 3 years ago


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Rock Cycle

Igneous rocks are formed when magma cools and hardens. Magma will cool inside the Earth or cools on the surface. Basalt and obsidian are a type of igneous rock.

Sediments compact to form sedimentary rock. Any type of rock that erodes turns into sediments. Sediments have to float down into water to form sedimentary rocks.

Metamorphic rocks are formed under the crust of the Earth. The rocks form from intense heat and pressure. Inside metamorphic rocks are wavy layers and shiny crystals. Gneiss and marble are metamorphic rocks.

Sedimentary rocks are formed from sand, shells, pebbles and fossils. Sedimentary rocks are usually soft and may break apart easily. Limestone and conglomerate are a type of sedimentary rock.

Magma is one of the main parts of the rock cycle. Magma spews out of volcanos and hardens to become igneous rock.

The rock cycle is a cycle of three types of rocks changing and forming into each other.

Sedimentary Rock

Igneous Rock

Metamorphic Rock



The Rock Cycle


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