What influence does the core of the earth have on the crust where we are located?

A constant heating and cooling cycle in the mantle drives plate movement on Earth's surface. Heat working its way out from the core of the planet fractured the crust into irregular tectonic plates that are constantly in motion.

Explanation:

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.