Question

The lithosphere floats on the asthenosphere like glass on clay. When the clay moves, the glass moves. The movement of the lithosphere is _____.

volcanic activity
earthquakes
seafloor spreading
plate tectonics

Answer 1

The movement of the lithosphere is best described by **plate tectonics**. This term encompasses the movement of the Earth's lithospheric plates, which float on the more fluid asthenosphere beneath them.