Volcanoes are formed when molten rock rises up through fissures in the Earth's surface caused by movement of tectonic plates. The vent is the opening where magma emerges from the asthenosphere onto the Earth's crust. The funnel-shaped depression at the top of a volcano is called the crater. Active volcanoes frequently erupt, while dormant volcanoes may erupt again in the future but are currently inactive. Areas around volcanoes are rich in minerals and some have developed hot springs for tourism.

2. ATHIRA.S
SOCIAL SCIENCE
REGISTER NO:13983015

4. Volcanoes are caused when molten
rock (magma) flows out into the
earth’s surface through fissures
that are caused due to the
movement of plates.

5. The fissures through which the magma comes out from
the asthenosphere on to the crust of earth is known as
the vent
The funnel shaped depression that can be seen on the
summit of a volcanoes is known as a crater

6. Active volcano
ACTIVE VOLCANOES
Those that frequently
erupt
e.g.:
Mount Etna in Italy
Mount Fujiyama in Japan

7. Those that have
erupted earlier
and not active in
the recent past.But
can become
active.
E.g.
Vesuvius in Italy

8. Active at a time.
But will not erupt
again.
E.g.
Kilimanjaro in
Africa

9. Areas are rich in minerals
Black soil found here is suitable for cotton
cultivation
Hot springs founded here are supposed to
have healing properties
Also these places have been developed as
well known tourist spots