Volcanoes that have not erupted for a long geological timeframe and show no signs of future activity are called extinct. These volcanoes are considered “dead” because their magma supply has been cut off, often due to tectonic plate movement away from a hotspot or the cessation of subduction. Once a volcano is extinct, it undergoes significant erosion over millions of years. ANSWER: (C) Extinct
Volcanoes that have not erupted for a very long time and show no signs of future activity are called: (A) Active (B) Dormant (C) Extinct (D) Sleeping
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An extinct volcano is one that scientists believe will never erupt again. This happens when the volcano is no longer fueled by a magma source. Geographically, this often occurs when tectonic plates shift, moving a volcanic mountain away from its “hotspot” or when a subduction zone becomes inactive. Unlike dormant volcanoes, which may still have hot magma deep below, extinct volcanoes are geologically cold. Over time, these peaks lose their characteristic conical shape due to weathering and erosion, eventually leaving behind only hard volcanic remnants like volcanic necks or weathered fertile highlands.