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Earth Systems
| Term | Definition |
|---|---|
| Atmosphere | A mixture of gases that surrounds a planet, such as Earth |
| Asthenosphere | The soft layer of the mantle on which pieces of lithosphere move |
| Biosphere | All of the ecosystems on Earth; the part of Earth where life exists |
| Color | One of the physical properties used to identify minerals |
| Deposition | The process in which water, ice, wind, and gravity drop newly formed sediments |
| Erosion | The process by which particles of rock are removed from their source; the removal and transfer of rock and soil by the flow of water, and by the actions of gravity, wind and ice |
| Hardness | Another one of the physical properties of minerals used in showing its resistance to being scratched |
| Igneous | The type of rock that forms when hot, liquid rock, or magma, cools and hardens |
| Lithosphere | The outermost, rigid layer of the Earth that consists of the crust and the rigid, upper part of the mantle |
| Luster | The way a mineral reflects light |
| Metamorphic | The type of rock that forms when existing rocks are heated and squeezed |
| Mineral | Any naturally formed solid matter with a crystal structure |
| Sedimentary | The type of rock that forms when particles of rock, or sediment, collect and harden into new rock |
| Stratosphere | The atmospheric layer above the troposphere |
| Streak | The color of a mineral in a powder form |
| Tectonic Plate | A piece of the lithosphere that moves around on top of the asthenosphere |
| Tectonic Plate Movement | When tectonic plates pull apart, push together, or slide and rub against each other |
| Troposphere | The lowest layer of the Earth’s atmosphere |
| Volcanism | The process that forms mountains from molten rock erupting onto the Earth’s surface |
| Weathering | The process by which water, ice, heat, and wind act to break down rocks |