Felsic magmas are higher in silica. The higher the amount of silica in the magma, the more viscous it is. Viscosity determines what the magma will do. Most felsic magma will stay deeper in the crust and will cool to form rocks such as granite. If felsic magma rises into a magma chamber, it may be too viscous to move and so it gets stuck. Dissolved gases become trapped by thick magma and the magma chamber begins to build pressure and felsic magmas will erupt explosively.
Over time, pressure continues to build in the tectonic plates, until suddenly, they shift in an earthquake. Aftershocks are common, but then a long time can pass before another one becomes likely.
gravity affects the water cycle because it pulls denser water down and less dense air up. it also causes precipitation to fall from clouds. sunlight provides energy for the water cycle
