This document discusses different types of volcanoes. It begins by defining a volcano as a mountain where molten rock, known as magma, rises up from below the earth's surface. Volcanoes form as a result of movement of tectonic plates, which causes fissures through which magma can escape from deep underground. There are three main types of volcanoes: active volcanoes, which frequently erupt; extinct volcanoes, which were once active but will not erupt again; and dormant volcanoes, which were active in the past but are not currently erupting, though could potentially erupt again in the future. Examples of each type are provided.
2. INTRODUCTION
A volcano is a mountain that opens
downward to a pool of molten rock below the
surface of the earth. When pressure builds up,
eruptions occur.
Volcanoes are caused when molten rocks flows
out onto earth’s surface through fissures that
are caused due to the movement of plates.
The fissures through which the magma comes
out from the aesthenosphere on to the crust of
the earth is known as the vent.
