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Rock Cycle Test Study Guide Be able to read these graphics: ANY ROCK CAN BECOME ANY OTHER KIND OF ROCK if it goes through the process necessary for the rock to form. Be able to interpret data from a hardness scale Be able to make an inference based on rock density using information from a data table. Crystal size depends on the time it takes to cool: long time = large crystals; short time= small crystals Granite is a rock Igneous: melting, cooling, hardening, lava, magma Know that to determine density, you need to measure volume (ruler, beaker or graduated cylinder) and mass (graduated cylinder) and a calculator Know the key words for how each rock is formed: Lava on top of earth’s surface produces extrusive igneous rock. Magma below earth’s surface produces intrusive igneous rock Metamorphic: heat and pressure, chemical change Quartz is a mineral Rocks are made of minerals Sedimentary: weathering, erosion, wind, water, ice, deposition, compaction, cementation, layers The property that Mohs hardness scale tests is how easily a mineral can be scratched. EXAMPLES OF ROCKS FROM JOURNAL: Sandstone - Sedimentary Gneiss - Metamorphic Limestone - sedimentary Granite - igneous Slate - Metamorphic obsidian - igneous
