Answer:
Density
Step-by-step explanation:
The factors that allows magma to push its way up includes temperature and density.
Temperature is the degree of hotness or coldness of a body
Density is the mass per unit volume.
Temperature and density combines within the asthenosphere to create convective cells by which magma is force up.
- A hot magma is less dense and it is light, therefore, it rises up to crustal levels.
- A cold magma is dense and it sinks downward.
- This cyclic exchange is what drives the movement of magma at sub-crustal levels.