For tectonic plates to stop moving, the Earth’s mantle will have to be too cold for convection to occur. If that were to happen, then it means the Earth’s outer core has likely solidified. … On one hand, if heat can’t reach the mantle or Earth’s crust, then the whole planet might freeze.
Are tectonic plates fast moving?
Earth’s tectonic plates are moving faster now than at any point in the last 2 billion years, according to the latest study of plate movements. … This crust forms where plates move apart, allowing hot, light magma to rise from the mantle below and solidify.