Sedimentary rock - Rock formed by compaction and cementation of sediment, Metamorphic rock - Rock formed by extreme heat and pressure, Igneous rock - Rock formed by cooling lava or magma, Mohs Hardness Scale - The scale of relative hardness of minerals , Diamond - The hardest mineral on the Mohs hardness scale, Talc - The softest mineral on the Mohs hardness scale, Streak - The color a mineral leave behind when rubbed across a ceramic tile or streak plate, Hardness - A minerals ability to scratch another mineral, Brittle - How easily a mineral breaks, Compaction - The squeezing together of sediments, Luster - The way a mineral reflects light, Cleavage - the splitting of rocks or crystals in a preferred plane or direction.,

Rocks and Minerals Vocabulary Matching

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