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mineral a solid natural material that has a crystal form and its own set of properties
humus `decaying plant and animal material in soil
streak the color of the mark that a mineral makes when its scraped on a white tile
rock a solid mixture of minerals that was formed in the Earth"s crust
luster the way that a mineral"s surface reflects light
sedimentary rock rock that formed when sediments were pressed and cemented together
metamorphic rock rock that formed when another kind of rock was squeezed and heated deep inside of Earth's crust
rock cycle the process of rocks changing into other kinds of rock
igneous rock rock that formed from cooled magma or lava
soil a material made of tiny pieces of rock, minerals, and decayed plant and animal matter
deposit the dropping of sediments by water, wind, or melting ice on a surface
Created by: M4t7ox