The article presents the likely cause of cracks in the continental and oceanic lithospheric plates, and the probable causes of earthquakes initiating Earth’s speed changes. As the root cause of one of the earthquakes, the author adopts a rotational speed of the globe (reasons: changes of the ocean level, convection currents, or a change in the ice cover) causing the formation of small d’Alambert’s forces with a latitudinal direction, which affect the tectonic plates. The author shows that there is a natural amplifier in the lithosphere, which converts the small d’Alambert’s forces into forces capable of moving tectonic plates on the asthenosphere. The energy to produce the drift of tectonic plates comes from the potential energy of water column in the oceans and some lakes. Thus, the author also explains where the continent-moving forces come from, unlike AlfredWegener who was not able tounravelthis. It should be emphasized that the earthquake in 2011 (Fukushima) occurred during theEarth’s speed change. Current hypotheses should be re-examined and the reason for tectonic plate drift should be re-considered taking into account the hydrostatic pressure – a factor influencing the water column in the oceans and some lakes, and affecting the change in rotation speed of the Earth. The author believes that it is appropriate to carry out work to identify a close relationship between the changes in the Earth’s speed and earthquakes initiated by these changes, which would allow to forecast some earthquakes.