What is the softest mineral?, diamond, gypsum, talc, fluorite, What is the hardest mineral?, apatile, diamond, topaz, corundum, What are minerals made of?, color, solid, streak, elements, Properties of materials are color, streak, hardness, and ___., luster, elements, fossil, gypsum, Which rocks are formed from cooling magma or lava?, igneous, sedimentary, metamorphic, Both a and b, Which rocks are formed from another kind of rock under heat and pressure?, igneous, sedimentary, metamorphic, Both b and c, Which rocks are made of bits of matter cemented together?, igneous, sedimentary, metamorphic, Both b and c, A conglomerate is made of stones stuck together, True, False, Under heat and pressure, limestone becomes marble, True, False, Limestone is an igneous rock with large crystals, True, False, Obsidian is an igneous rock with no crystals, True, False, Coal, oil, and natural gas are _____ fuels., fossil, peat, remain, pressure, Pressure turned ancient plants into _____ that, over time, turned into coal., cover, peat, organism, ocean, Fossils are the _____ or traces of things that lived long ago., natural, coal, peat, remains, A layer of rock is _____ than the layer above it., older, change, younger, periods, An element's _____ is the time it takes for half of the element to change into another element., half-life, periods, older, layer, An era is divided into smaller units of time called _____., element, periods, age, diagram

Chapter 6 - Part 2

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