How did Sonar help prove plate tectonics?

Sonar technology played a crucial role in proving plate tectonics by allowing scientists to map the ocean floor in detail. Through sonar surveys, researchers discovered mid-ocean ridges, deep-sea trenches, and patterns of earthquakes and volcanic activity that aligned with tectonic boundaries. These findings provided concrete evidence of seafloor spreading and the movement of tectonic plates, supporting the theory that Earth's lithosphere is divided into plates that float on the semi-fluid asthenosphere beneath. The data gathered from sonar helped to solidify the understanding of plate tectonics as a fundamental geological process.