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Rocks & Soil


mineral a naturally occurring, non-living solid with a specific chemical composition and crystal structure
Mohs' scale a list of minerals of varying hardness
ore a mineral that contains a valuable substance in it, such as silver or iron
paleontologist a person who studies fossils
pebble a small, smooth, rounded rock
rock a naturally occurring combination of minerals
rock cycle a gradual and steady change of rock in the earth's crust to igneous, sedimentary, or metamorphic rock
sand the rock and mineral particles smaller than two millimeters in diameter
sediment the pieces of material carried and deposited by water or wind
silt very small soil particles that can be picked up and carried by wind and water
soil a mixture of crushed rock and pieces of organic material from plants and animals that covers some areas of the crust
weathering the mechanical or chemical breaking of rock into smaller pieces that eventually decay to soil
Created by: AHoldeman