Related by context. Frequent words. (Click for all words.) 68 lithosphere 67 tectonic plate 64 tectonic plates 64 Earth crust 63 earth crust 63 crustal 62 landmasses 62 subduction zone 61 tectonic 60 subduction zones 59 continental crust 59 plate tectonics 57 Cascadia subduction zone 57 subduction 55 gravitational attraction 55 oceanic crust 55 tectonics 54 continental drift 54 spacetime 54 continental plates 53 tectonic plates collide 53 vortices 53 gravitational tug 52 deformation 52 ocean ridges 52 molten rock 51 atomic nuclei 50 centrifugal forces 50 magnetic flux 50 Tibetan Plateau 50 seismic waves 50 singularities 50 seismically active regions 49 ocean currents 49 gyre 49 Earth magnetosphere 49 volcanism 49 galaxy clusters 49 Brownian motion 49 magma chamber 49 angular momentum 49 planet orbits 49 striations 48 atmospheric circulation 48 faultline 48 volcanic eruptions 48 Volcanic eruptions 48 neutron star 48 Kilauea Volcano 48 accretion disk 47 landmass 47 volcanic islands 47 hydrological cycle 47 lavas 47 Saturn rings 47 Ross Ice Shelf 47 volcanoes 47 lava flows 47 updrafts 47 torus 47 glaciers melt 47 meteoroids 47 magma 47 oscillations 47 glacial melting 47 quakes measuring 46 magnetosphere 46 Wilkins Ice Shelf 46 icecaps 46 Andromeda galaxy 46 earthquakes 46 magnetar 46 Iapetus 46 planetoid 46 scarps 46 equatorial Pacific Ocean 46 Haumea 46 galaxy cluster 46 observable universe 46 sedimentary rock 46 supernova explosion 46 Greenland glaciers 46 melting permafrost 46 deforming 46 geologically active 46 San Andreas Fault 46 seismic activity 45 sedimentary basins 45 solar nebula 45 quakes 45 amplitudes 45 volcanically active 45 muons 45 gravitational 45 glaciers 45 southeastward 45 centrifugal force 45 currents 45 X ray emission 45 volcanic activity 45 discontinuities