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Earth's Structure
Chapter 1 Lessons 1-3
| Term | Definition |
|---|---|
| System | A group of parts that work together as a whole. |
| Energy | The ability to do work or cause change. |
| Atmosphere | The relatively thin layer of gases that form Earth's outermost layer. |
| Geosphere | The densest parts of the Earth that include the crust, mantle, and core. |
| Hydrosphere | The portion of the Earth that consists of water in any of its forms, including oceans, glaciers, rivers, lakes, groundwater and water vapor. |
| Biosphere | The parts of Earth that contain living organisms. |
| Constructive Force | Any natural process that builds up Earth's surface. |
| Destructive Force | Any natural process that tears down or wears away Earth's surface. |
| Seismic Wave | Vibrations that travel through Earth carrying the energy released during an earthquake. |
| Pressure | the force pushing on a surface divided by area of that surface. |
| Crust | The layer of rock that forms Earth's outer surface. |
| Basalt | A dark, dense, igneous rock with fine texture, found in oceanic crust. |
| Granite | A usually light-colored igneous rock that is found in continental crust. |
| Mantle | The layer of hot, solid material between Earth's crust and core. |
| Lithoshpere | A rigid layer made up of the uppermost part of the mantle and the crust. |
| Asthenosphere | the soft layer of the mantle on which the lithosphere floats. |
| Outer Core | A layer of molten iron or nickel that surrounds the inner core or Earth. |
| Inner Core | A dense sphere of solid iron and nickel at the center of the Earth. |
| Radiation | The transfer of energy by electromagnetic waves. |
| Convection | The transfer of thermal energy by the movement of liquid. |
| Conduction | 1.)The transfer of thermal energy from one particle of matter to another. 2.) A method of charging an object by allowing electrons to flow from one object to another object through direct contact. |
| Density | The ratio of the mass of a substance to its volume (mass divided by volume). |
| Convection Current | The movement of a fluid, caused, by differences in temperature, that transfers heat from one part of the fluid to another. |