Question

Define volcano. How are the volcanoes classified on the basis of their period of eruption.
tell in short

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if the answer will be correct ​​

Answer 1

Answer:

Two basic classifications of volcanoes are based upon the type of eruption they produce: explosive (or central) and quiet (or fissure). ... Eruptions are rapid and violent, often spewing lava, ash and volcanic material high into the air. Quiet eruptions usually emit great volumes of lava along a long fissure or fracture.

Answer 2

Answer:

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle.