| A | B |
|---|
| cementation | The process by which dissolved minerals crystallize and glue particles of sediments together into one mass |
| chemical rock | Sedimentary rock that forms when minerals crystallize from a solution |
| clastic rock | Sedimentary rock that forms when rock fragments are squeezed together under high pressure |
| compaction | The process by which sediments are pressed together under their own weight |
| coral reef | A structure of calcite skeletons built up by coral animals in warm, shallow ocean water. |
| crystal | A solid in which the atoms are arranged in a pattern that repeats again and again. |
| crystallization | The process by which atoms are arranged to form a material with a crystal structure |
| deposition | The process by which sediment settles out of the water or wind that is carrying it. |
| element | A substance that cannot be broken down into other substances. |
| erosion | The destructive process in which water or wind loosens and carries away fragments of rock. |
| extrusive rock | Igneous rock that forms from lava on Earth's surface. |
| foliated | Term used to describe metamorphic rocks that have grains arranged in parallel layers or bands. |
| fossil | A trace of an ancient organism that has been preserved in rock. |
| grains | The particles of minerals or other rocks that give a rock its texture. |
| granite | A usually light-colored igneous rock that is found in continental crust. |
| igneous rock | A type of rock that forms from the cooling of molten rock at or below the surface. |
| intrusive rock | Igneous rock that forms when magma hardens beneath Earth's surface. |
| inorganic | NOT formed from living things or the remains of living things |
| magma | The molten mixture of rock-forming substances, gases, and water from the mantle. |
| metamorphic rock | A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions. |
| mineral | A naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition. |
| organic rock | Sedimentary rock that forms from remains of organisms deposited in thick layers |
| rock | A solid mixture of minerals and other materials. |
| rock cycle | A series of processes on the surface and inside Earth that slowly changes rocks from one kind to another. |
| rock-forming minerals | Any one of the common minerals that make up most of the rocks of Earth's crust. |
| sediment | Small, solid pieces of material that come from rocks or organisms. |
| sedimentary rock | A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together. |
| silica | A material found in magma that is formed from the elements oxygen and silicon. |
| solution | A mixture in which one substance is dissolved in another |
| texture | The look and feel of a rock's surface (determined by the size, shape, and pattern of a rock's grains). |
