magma
it is just called molten rock, and it comes out of the Earths crust via volcanoes. you can also say that its melted lava
Once magma breaks through the earths crust it is called"lava"
Seismic waves pass through the earth when part of earth's crust breaks.
that is a volcano starting 100 years would pass and then it becomes more of a volcano.
Lava....when its under the earths crust its called magma.
The melted rock below the crust is magma. Above ground it is lava.
volcano
Lava is molten rock escaping through holes and cracks (eg volcanos) in the Earth's crust. The molten rock when under the Earth's crust is called magma.
faults
=]
is called a volcanic mountain
It is called the asthenosphere.