Question

In 3-5 sentences, describe how paleomagnetic evidence supports the theory that continents change position (drift) over time.

Answer 1

Paleomagnetic evidence demonstrates that the Earth's magnetic field has reversed its polarity over geological time, and by examining the orientation of magnetic minerals in ancient rocks, scientists can infer the historical latitude at which those rocks formed. When these orientations are plotted, they often show that certain landmasses have shifted position from their original locations, suggesting continental drift. Additionally, the patterns of magnetic stripes on the ocean floor provide evidence of seafloor spreading, reinforcing the idea that continents move apart as new crust forms at mid-ocean ridges. Together, these paleomagnetic records offer compelling support for the theory of plate tectonics and the movement of continents over time.