What is the primary process responsible for the movement of lithospheric plates across the asthenosphere?

💡 Solution & Explanation

Thermal convection currents operating within the semi-fluid asthenosphere of the Earth's mantle transfer heat from the core, driving the continuous movement of rigid lithospheric plates across the globe. This fundamental mechanism explains continental drift, seafloor spreading, and mountain building. Phenomena like earthquake tremors are results of tectonic movement rather than its primary driving force. Physical geography questions consistently focus on internal Earth dynamics and plate tectonics.