igneous rock - Rocks formed when hot molten rock cools and hardens , erosion - The wearing away and removal of soil and rock by natural elements such as wind, waves, rivers and ice and by human activity , deposition - The settling of transported sediments , extrusive rock - Describes igneous rock that forms when lava cools on Earth's surface, intrusive rock - Describes igneous rock that forms when magma cools below Earths surface, sedimentary rock - Rocks formed through deposition and compaction of layered sediment, metamorphic rock - Rocks formed from the change of pre-existing rocks due to increasing temperature and pressure  , lithication - The process of turning sediment into rock ,

Rocks

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