Magma can form up to 250 km deep in the Earth. If magma forms at such a depth, how can magma at that depth rise through the mantle and the crust toward the surface?
What will be an ideal response?
Answer: Magma by definition is molten rock, which means that it is hot and it is liquid. These two factors mean that magma is less dense than the surrounding mantle, so it can rise.
Environmental & Atmospheric Sciences
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