noun Descargar 🔗Compartir Sial The rocks rich in silicon and aluminum that form the upper layer of the earth's crust, which lies beneath all continental landmasses. Examples : "Geologists study the composition of sial to understand the formation of continents. " Los geólogos estudian la composición del sial para comprender la formación de los continentes. geology material substance environment world science Chat con IAJuego de vocabularioPracticar lectura