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Earth Structures
Minerals, Rock Cycle, Earth's Layers, and Plate Tectonics
| Question | Answer |
|---|---|
| The innermost layer of the earth | Core |
| The thinnest, outermost layer of the earth | Crust / Lithosphere |
| The earth layer made up of hot, flowing rock with convection currents. | Mantle |
| The slow-flowing, lower part of the mantle | Mesosphere |
| The upper mantle | Asthenosphere |
| A solid, naturally occurring, inorganic substance with an orderly crystal structure. | Mineral |
| A way to measure a mineral's hardness, based on what it can scratch or be scratched by. | The Mohs Scale |
| The way pieces of Earth’s Lithosphere/crust move and change shape. | Plate Tectonics |
| Continental crust is (thicker / thinner) than oceanic crust | Thicker |
| The place where two tectonic plates meet or touch | Boundary |
| In a _________ boundary, plates move apart from each other. | Divergent |
| In a ____________ boundary, plates move closer together or collide. | Convergent |
| In a ________ boundary, plates slide past one another. | Transform |
| The transfer of heat through a liquid or a gas, due to differences in temperature and density, that occurs in the earth's mantle. | Convection Current |
| A piece of earth's crust sinks down into the mantle | Subsidence |
| A piece of earth's crust is raised | Uplift |
| The way a mineral's surface reflects light; shininess. Descriptors include metallic, dull, glassy, and greasy. | Luster |
| True or false: Color alone is not a good way to identify a mineral. | True; some minerals can be thee same but have different colors, and some minerals can be different but have the same colors. |
| This type of rock is formed when other rocks are exposed to heat and pressure | Metamorphic |
| This type of rock is formed when sediment is compacted and cemented together | Sedimentary |
| This type of rock is formed from cooled magma or lava | Igneous |
| The process of a rock being broken down by a physical or chemical agent. | Weathering |