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Rock Vocabulary! Igneous Rock: A rock that is formed by magma (melted rock) and cools Sedimentary Rock: A rock that is formed by pressure Metamorphic Rock: A rock that is formed by heat and pressure Lustre: whether and object is shiny or dull porous: a rock that has air bubbles (they usually IGNEOUS rocks) permeable: can absorb liquid split: how easily a rock can break (hammer) wear: how easily it breaks apart with friction (sandpaper) compaction: pressure / to squish cementation: sticking together / gluing together sedimentation: breaking down into little pieces sediments: little pieces of broken down rock biological weathering: breaking down rocks by humans, plants, & animals chemical weathering: breaking down rocks by chemicals (acid rain) physical weathering: breaking down the rock by cooling, heating, and wind erosion: describes the way pieces of weathered rock move about magma: molten rock rocks: pieces of Earth’s crust that has 2 or more minerals minerals: inorganic solids that are natural to our world and when you break it open, it looks the same. Rock Vocabulary! organic: this is an object that was once alive inorganic: this is an object that was never alive fossils: the remains or impressions that are left behind of plants and animals. Usually found in SEDIMENTARY rocks. rock cycle: the way earth recycles rocks crystals: a solid that has a specific pattern made inside. Often sparkly!
