GEOLOGY

Detailed explanation-1: -Extinct volcanoes are those that scientists consider unlikely to erupt again because the volcano no longer has a magma supply.

Detailed explanation-2: -Simply put, they’re cut off from their supply of lava. This is where a chamber of magma underneath the surface of the Earth finds its way to the surface through weaknesses in the crust.

Detailed explanation-3: -Volcanoes are classified as active, dormant, or extinct. Active volcanoes have a recent history of eruptions; they are likely to erupt again. Dormant volcanoes have not erupted for a very long time but may erupt at a future time. Extinct volcanoes are not expected to erupt in the future.

Detailed explanation-4: -A dormant volcano is one that is “sleeping” but could awaken in the future, such as Mount Rainier and Mount Fuji. An extinct volcano is “dead”-it hasn’t erupted in the past 10, 000 years and is not expected to ever erupt again. Kohala on the Big Island of Hawaii could be considered an extinct volcano.

Detailed explanation-5: -Answer and Explanation: Volcanoes become extinct when they are cut off from their lava flow, thus not having a source a magma to erupt. They initially become dormant and then extinct. Volcanoes are often formed by the movement of tectonic plates grinding or subducting and shifting upwards.