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Earth's Interior

QuestionAnswer
Earth's 4 layers are... Crust, Mantle, Outer Core, Inner Core
The earth's layers are differentiated which means... The most dense materials sank to the center and the least dense rose to the surface during the formation of the planet
What are the 3 states of matter? Solid, Liquid, Gas
What state of matter is the crust? Solid
What state of matter is the mantle? Solid but ductile
What does it mean for the mantle to be ductile? It is solid but flows under extreme pressure and heat (think play doh)
What state of matter is the outer core? Liquid
What state of matter is the inner core? Solid
What is the main function of the crust? It has Earth's tectonic plates
What is the main function of the mantle? Convection in the mantle drives the movement of tectonic plates
What is a convection current? Less dense/hotter materials rise, cool off and become denser, and then sink before repeating the cycle.
Convection in the outer current generates what? Earth's Magnetic Field
What causes Earth's magnetic field to reverse? The direction of convection in the outer core changes
What is the main function of the inner core? It stores and conducts out Earth's internal heat
What are the two sources of internal heat in the Earth? Radioactive decay and Primordial energy
What is radioactive decay Radioactive molecules dissolve and the energy they held within them is released
What is primordial energy? The energy left over from the formation of our planet
If mantle is upwelling/rising in a convection current, what will happen to tectonic plates on the surface? They will diverge/form a mid-ocean ridge
If mantle is downwelling/sinking in a convection current, what will happen to the tectonic plates on the surface? They will converge/subduct/form a trench or island arc
Created by: user-1765500
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