Volcanoes

== ﻿ Volcanoes ==



Facts

 * = ﻿A volcano is a mountain topped with vents,holes and craters. =
 * = There are around 1,510 active volcanoes in the whole world,we currently know 8 active volcanoes are under the ocean. =
 * = When magma erupts from the volcano it is called lava. =
 * = There are 3 types of volcanoes: active, dormant, and extinct. =

Did you know?

 * == The largest active volcano on Earth is Mauna Loa,located in Hawaii. ==
 * == The laregest volcano in our solar system is Olympus Mons found in planet Mars.﻿ ==
 * == The highest volcano is Ojos del Salado in Chile. ==
 * == The oldest volcano is probably Etna that is about 350,000 years old!﻿ ==



Vocabulary

 * 1) == Ash-Fine particles of dust blown from an exsplosion vent. ==
 * 2) == Eruption-The process by wich solid,liquid and gaseous materials are ejected into earth's atmosphere. ==
 * 3) == Magma-Molten rock beneath the surface of the earth. ==
 * 4) == Extinct Volcano-A volcano that is not expected to erupt again. ==
 * 5) == Dormant Volcano- A volcano that is not currently erupting but is likely to erupt in the future. ==
 * 6) == Active Volcano-A volcano that erupts regularly. ==
 * 7) == Mantle-The zone of the earth below the crust and above the core. ==

How are volcanoes formed?
== Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger. ==