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## Rocks Both igneous and sedimentary rocks can become metamorphic rocks through heat and pressure. All types of rock can be eroded to form sedimentary rock. Ultimately, all rocks can melt into liquid magma. ### Rock Cycle * **Melting** * **Cooling** - Igneous Rock * **Weathering and Erosion**...

## Rocks Both igneous and sedimentary rocks can become metamorphic rocks through heat and pressure. All types of rock can be eroded to form sedimentary rock. Ultimately, all rocks can melt into liquid magma. ### Rock Cycle * **Melting** * **Cooling** - Igneous Rock * **Weathering and Erosion** * **Heat and Pressure** - Metamorphic Rock * **Weathering and Erosion** * **Heat and Pressure** * **Sediment** * **Compaction and Cementation** - Sedimentary Rock * **Weathering and Erosion** ### Uses of Rocks * Many household utility items are made from rocks. #### Examples * **Slate** (sedimentary) * **Phyllite** (metamorphic) * **Granite** is used for mortar and pestles. * **Marble** is used for rolling boards. * **Sandstone** is used for forts. * **Granite** is used for temples. Buildings, roads, different constructions, and monuments are also made from various rocks.