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Introducing Earth

lessons 1-3

WordDefinition
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 Earth that include the crust, mantle and core.
Hydrosphere The portion of 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 the area of that surface.
Crust The layer of rock that forms Earth's outer surface.
Basalt A dark, dense, igneous rock with a 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.
Lithosphere 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 and nickel that surrounds the inner core of the Earth.
Inner Core A dense sphere of solid iron and nickel at the center of Earth.
Radiation The transfer of energy by electromagnetic waves.
Convection The transfer of thermal energy by the movement of a liquid.
Conduction The transfer of thermal energy from one particle of matter to another.
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.
Created by: abelan001
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