Question

The earth layer that is rich in magnesium and iron and is not quite solid but plastic, it drives the movement of the crustal plates and causes continents to shift over time is called: A) Mantle B) Crust C) Inner Core D) Outer Core

Answer 1

The earth layer rich in magnesium and iron, that is somewhat plastic and drives crustal plate movement, is called the Mantle. This layer largely contributes to Earth's geology by driving plate tectonics, and influencing phenomena like earthquakes and volcanic eruptions.

Step-by-step explanation:

The earth layer, rich in magnesium and iron and described as plastic-like, which drives the shifting of crustal plates and continents, is the Mantle (Option A). This layer isn't completely solid but can deform and flow slowly, which enables the movement of tectonic plates above it.

Mantle is located underneath Earth's crust and extends to a depth of about 2900 kilometers. The mantle contributes to many geological phenomena including earthquakes and volcanic eruptions, as it is active and part of the engine driving plate tectonics. The heat from the mantle is transferred to the crust triggering the movement of the crustal plates, leading to phenomena like mountain building, continental drifts, and the formation of oceanic rifts and subduction zones.

Learn more about Earth's Layers