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Earth Science

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Across
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Material that is not organic
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Can be crushed into white powder that is commonly used to keep diapers clean
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Precious mineral and has a Carbon composition
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A metamorphic rock with crystals arranged in parallel bands
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The dense sphere at Earth’s center, made mostly of iron and nickel
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A layer of relatively cool, rigid rock that includes the uppermost part of the mantle and crust
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An igneous rock that forms at Earth’s surface
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The principle the geologic processes operating today also operated in the past
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A rock made of compounds of silicon and oxygen, generally containing metals such as aluminum, iron, or calcium
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A mineral’s tendency to split along regular, well-defined planes
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Rock that forms over time as sediment is squeezed and cemented together
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A series of processes in which rocks continuously change from one type to another
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Small, solid pieces of material that come from rocks or living organisms
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Known as fool's gold and has iron sulfide composition
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The color of a mineral’s powder
Down
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A person who studies the Earth and its structure
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Rock that forms from magma or lava
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Magma that flows over Earth’s surface
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A solid combination of minerals or other materials
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Sedimentary rocks that form from the broken fragments of other rocks
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Rock that has been changed by temperature, pressure, or reactions with water
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The way a mineral breaks, determined by the mineral’s crystal structure
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A layer of softer, weaker rock beneath Earth's lithosphere, which can flow slowly
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An igneous rock that forms underground from hardened magma
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The lower portion of Earth’s mantle
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The way a mineral’s surface reflects light
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The resistance of a mineral to scratching
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Also known as ‘salt’ and has a composition of sodium chloride
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A thick layer of hot but solid rock beneath Earth’s crust
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The rocky outer layer of Earth