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| Question | Answer |
|---|---|
| mineral | a naturally formed, inorganic solid with a crystalline structure |
| element | a substance that cannot be separated or broken down into simpler substances by chemical means; all atoms of an element have the same atomic number |
| atom | the smallest unit of an element that maintains the properties of that element |
| compound | a substance made up of atoms or ions of two or more different elements joined by chemical bonds |
| matter | anything that has mass and takes up |
| crystal | natural solid substance that has a definite geometric shape |
| streak | the color of a mineral in powdered form |
| luster | the way in which a mineral reflects light |
| cleavage | in geology, the tendency of a mineral to split along specific planes of weakness to form smooth, flat surfaces |
| weathering | weathering is the in-situ breakdown of rocks, soil, and minerals via physical, chemical, and biological processes driven by water, ice, air, and organisms. Key causes include temperature changes, freezing water, and acid reactions. |
| erosion | erosion is the geological process of wearing away and transporting soil, rock, and sediment via natural forces like water, wind, ice, and gravity. |
| deposition | A deposition is an out-of-court, sworn, oral testimony of a witness or party, typically recorded by a court reporter to gather evidence |
| igneous rock | Igneous rocks are “fire-born,” meaning that they are formed from the cooling and solidification of molten (melted) rock. |
| sedimentary rock | Sedimentary rocks are formed from deposits of pre-existing rocks or pieces of once-living organism that accumulate on the Earth's surface |
| metamorphic rock | Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet. |
| rock cycle | The rock cycle describes the processes through which the three main rock types (igneous, metamorphic, and sedimentary) transform from one type into another. |
| uplift | Uplift refers to the rising of portions of the Earth's surface while sinking of land refers to the downward shift of portions of Earth's surface. |
| subsidence | Subsidence - sinking of the ground because of underground material movement |
| rift zone | Rift zones are areas where the volcano is rifting or splitting apart. The rock in a rift zone has many cracks and is relatively weak, and thus it is easiest for magma to make its way to the surface through these rift zones. |