Question

15
(6.3. Short answer type questions: 16
What is a volcano? Give two causes of eruption.
4 Elaborate the trade works of Dutch company
in India.
Which book contained the reforms of cornwallis?
What are Moraines? Write its types.
lathat are our National Goals?
3​

Answer 1

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater.

Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber. ... This lighter magma then rises toward the surface by virtue of its buoyancy.