Final answer:
If the continents were to continue their motion since the time of Gondwanaland, the east coast of South America and the west coast of Africa would be moving closer together. This is because they were once part of the same supercontinent called Pangaea and have been drifting apart due to plate tectonics.
Step-by-step explanation:
If the continents were to continue the motion they have had since the time the continents formed Gondwanaland, one would expect the east coast of South America and the west coast of Africa to be moving closer together. This is because the east coast of South America and the west coast of Africa were once part of the same supercontinent called Pangaea. Over millions of years, the continents have been drifting apart due to the movement of tectonic plates.Plate tectonics is the scientific theory that explains the movement of Earth's lithosphere, which is divided into several tectonic plates. These plates move and interact with each other at plate boundaries, causing various geological phenomena such as earthquakes, volcanic activity, and the formation of mountain ranges. The drifting of continents is a result of plate tectonics.As the continents move, they do not remain static in their positions. The movement is slow but significant over long periods of time. The movement of tectonic plates is driven by convection currents in the Earth's mantle, which causes the plates to either collide, separate, or slide past each other. In the case of the east coast of South America and the west coast of Africa, they are moving closer together due to the subduction of the South American plate beneath the African plate.