Why is iron not used to make aeroplane?

Iron is too heavy, which is why they make most airplanes into aluminum, since it’s lighter.

Answer. first blank ; ; ; clockwise; the second blank; ///clockwise;

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.