Category : 5th Class
A volcano is an opening in the earth's surface which allows hot, molten rock, ash and gases to escape from below the surface. These burst out of the crust at the top or holes around the sides of the volcano through weak points. Some volcanoes are formed under the sea. When the lava cools down, the area formed looks like a new island.
The barren island is the only active volcano in the Indian subcontinent. It is located in the Andaman and Nicobar is lands.
Tidal waves are called tsunami. Tsunami are caused by an undersea earthquake or by a severe hurricane or cyclone. Storm waves from the sea come rolling towards the shore then cause destruction on the seashore in seconds. If these is already high tide then the storm waves hit the land. They can cause severe damage.
Drought are caused by poor rain fall. Land and water bodies dry up because of severe heat. This causes acute shortage of water for agriculture and domestic use. Because of scarcity of water animals and people suffer from food and drinking water.
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