The Earth's internal pressures force magma to the surface in areas of weakness , or sometimes faults.
Because the surronding magma is probably less dense
Because towards the middle of the Earth there is Lava/Magma, and that is why the temperaturee rises because it lets off so much heat.
when the magma gets closer to the lithosphere it cools and begins to sink
It is less dense than surrounding rocks.
Volcano or shield volcano.
a volcano probobly
It should be magma is the hottest because it is usually molten rock that has not reached the surface during an eruption.Lava is 2nd hottest. It is the molten rock we see when a crack in the crust of the earth or a volcano eruption allows molten rock from beneath the crust to come up.
The part shown above the water is known commonly as land.
below because the mantle and crust
For a volcano to erupt the pressure from magma beneath the surface of the earth's crust must exceed the weight of the crust above it
An active volcano, such as in the Hawaiian islands, is a weak spot in the Earth's crust.
A volcano is the opening in the crust through which lava comes forth.
A volcano.
After many many years the rock grows taller and taller because the volcano keeps erupting and cooling, making the volcano bigger and bigger. Magma (lava) seeps through cracks in the earths crust, it cools and hardens to form a cone shape on the surface. This happens repeatedly over hundreds of years thus eventually forming the cone shape of a volcano.
That definition could apply to any volcano.
Lava is the molten rock that is expelled from erupting volcanoes. The molten rock is released under pressure through the earth's crust where the crust is weakest. This is often at plate boundaries but can be within plates.
An erupting volcano occurs when the pressure of the molten lava beneath becomes too great.
The way the convection cell might affect the crust above it is that it can cause the earths surface to turn into a volcano. If there is already a volcano there then it will erupt,
VOLCANO
volcano
Volcano or shield volcano.