What do P and S seismic waves tell us about the nature of the Earths interior?
They tell us that the Earth is layered. They show us a solid inner core, a liquid outer core, and a solid mantle. They show us that the crust is very thin. 10. List at least 4 observations that suggest that the tectonic plates have moved large distances. • The coastlines of Africa and South America fit together like puzzle peices. • Magnetic stripes on the seafloor show that new ocean crust is produced steadily on both sides of mid-ocean ridges. • There are glacial markings on rocks that are in tropical areas of India. • The ages of the rocks on the seafloor are much younger that those of the continents • and there are many more possible answers!
