Question

Which one of the following is an active volcano?
A.Mt. Arata of Turkey
B.Mt. Kulal of Kenya
C.Mt. Fujiyama of Japan
D.Mt. Stromboli and Mt. Etna in Italy

Answer 1

Hint:The sudden movements associated with internal forces of the earth are called volcanic eruptions. A vent in the earth's crust from which fiery hot magma erupts from the earth's interior is called a volcano.

Complete answer:
 The main causes of volcanic eruptions is Heat and Pressure inside the Earth.Temperature and pressure both increase from the surface towards the centre of the earth. Rocks are bad conductors of heat. So the earth's heat does not escape on its own. Instead, it melts the rocks .
On the basis of frequency of their eruption, volcanoes are classified into three main types- and extinct volcanoes, active and dormant.
 Active Volcanoes: These are the volcanoes which are presently in active state and have erupted in the recent past.At present the active volcanoes are five hundred in number .Volcanoes which may erupt at any time are twenty . A few of these volcanoes are always in a state of permanent eruption. Some of the examples of active volcanoes are Mt. Stromboli and Mt. Etna in Italy; Pinatubo in Philippines and Mauna Loa in Hawaii.
The correct option for the given question is D Mt. Stromboli and Mt. Etna in Italy.

Note:The endogenic forces are the forces which are related to or arising from the interior of the earth. There along the lines of are two types of endogenic forces-diastrophic and sudden movements. The sudden movements bring about changes that are instant on the surface of the earth .