Final answer:
If earthquakes cause plate movement, we would expect to find geological data on plate boundaries, seismic activity at plate boundaries, and a possible correlation between plate movement and volcanic eruptions.
Step-by-step explanation:
If earthquakes cause the plates to move, we would expect to find geological data on plate boundaries, such as evidence of the interaction between different plates. This could include features like mountains, rift valleys, and oceanic trenches. Additionally, there would likely be seismic activity at plate boundaries since earthquakes are a result of plate movement. Finally, there may also be a correlation between plate movement and volcanic eruptions, as volcanic activity can be influenced by the shifting of tectonic plates.