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The magma is in the mantle, the layer under the crust.
There is a convection current caused by radioactivity in the inner core which causes the plates to move.
Therefore the constructive plates move apart which means magma can rise up.
It'll then solidify and this is what makes volcanoes. Hence CONSTRUCTive.
What else can I help you with?
What causes magma to flow upward thought the earths surface?
The tectonic plates push together thus causing magma to shoot up and rise hence an eruption
When will magma rise to earths surface?
During a volcanic eruption or on a constructive boundary
How does magma rise to the surface of the Earth?
Through cracks, holes or vents in the earths crust.
What causes the magma inside a volcano to rise to award the surface?
The molten magma increases in pressure (like a pressure cooker at home) until it is forced towards the surface.
Magma tends to rise toward earths surface?
Yes, magma tends to rise towards the earth's surface. It does so because once melted it becomes less dense.
What causes magma to flow out of a weak spot in the earths crust?
Magma flows out of a weak spot in the Earth's crust due to the build-up of pressure from the molten rock beneath the surface. This pressure can result from the heat and movement of tectonic plates, creating pathways for magma to rise and eventually erupt onto the surface as lava.
What causes magma beneath the volcano to rise to the surface?
Increasing pressure pushes the magma upwards. This rising pressure can be caused by many different things.
What property of magma causes it to rise toword earth's surface?
It is less dense than its surrounding rock matter
What property of magam cause it to rise towaed earths surface?
What property of magam cause it to rise towaed earths surface?
What causes the earths crust to rise and fall?
The sudden vibration in the plates inside the crust causes the earths crust to rise & fall.
Why does magma come to the surface?
Magma is less dense than the surrounding rock; as such, it will rise toward the surface.
Why might molten rock rise and sink beneath the earths surface?
changes in buoyancy due to changes in density differences between the magma and surrounding rock.
