Earth's crust consists of at least 15 tectonic plates movement of tectonic plates oceanservice.noaa.gov tectonic plates Tectonic Earth’s crust consists of at least 15 tectonic plates Earth’s crust consists of at least 15 tectonic plates Ocean Service Earth’s crust consists of at least 15 tectonic plates Earth’s crust consists of at least 15 tectonic plates Earth’s crust consists of at least 15 tectonic plates