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A solid homogeneous inorganic substances occurring in nature having a definite chemical composition.
A solid formed by the solidification of a chemical and having a highly regular atomic structure.
A mixture of minerals, rock fragments, volcanic glass, organic matter, or other natural materials.
Type of rock formed from magma which is rich in iron and magnesium. It is dark in color.
Type of rock formed from magma which has a low magnesium and iron content. Tends to be light in color.
Type of rock which forms when heat and pressure cause chemical changes in existing rocks.
Loose materials such as rock fragments, mineral grains, and bits of shell that have been moved by wind, water, ice, or gravity.
A process which occurs when minerals such as quartz, calcite, and hematite are deposited between the pieces of sediment.
chemical sedimentary rock
A type of sedimentary rock formed when dissolved minerals come out of solution.
A type of fuel extracted from solid organic material, or is created directly by humans.
When a large number of windmills are placed in one area for the purpose of generating electricity.
The theory of HOW Earth's crust is moved along due to convection currents in the Earth's mantle.
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