How do metamorphic rocks change into magma?

1 Answer
Nov 10, 2015

Metamorphic rock is rock changed under pressure and heat (though not tremendous).
Magma is rock liquified under tremendous heat and pressure.

Explanation:

Metamorphic rock is rock changeded under pressure and heat, though not tremendous.

If you press on something with gaps or spaces, you may close those spaces. Also, as you press, you can heat, as well as the near proximity on atoms, which can facilitate chemical reactions.

If the pressure, and thus the heat is too great, then the rock liquifies. Magma is liquified rock.

Lava is magma brought to the surface. If it cannot cool quickly enough as it rises, it may appear as flowing liquid rock on the surface, as in Hawaii.