GEOLOGY

Detailed explanation-1: -Volcanologists use that term as shorthand for “potentially active, ” so a “dormant” volcano is one that is not erupting now, but that is considered “active” because it could erupt in the future. Mount Hood is an active volcano that is currently dormant. Kīlauea is an active volcano that is currently erupting.

Detailed explanation-2: -Mauna Kea last erupted about 4, 500 years ago and is likely to erupt again. Its quiescent periods between eruptions are long compared to those of the active volcanoes Hualālai (which erupts every few hundred years), Mauna Loa (which erupts every few years to few tens of years) and Kīlauea (which erupts every few years).

Detailed explanation-3: -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. Inside an active volcano is a chamber in which molten rock, called magma, collects.

Detailed explanation-4: -On January 5, 2023, Kīlauea began to erupt within Halemaʻumaʻu crater and produced one of the most awe-inspiring lava lakes in decades.

Detailed explanation-5: -Eyjafjallajökull, Iceland. Mount Vesuvius, Italy. Mount Etna, Italy. Mount Merapi, Indonesia. Mount Nyiragongo, Democratic Republic of the Congo. Pacaya, Guatemala. Arenal Volcano, Costa Rica. Kīlauea, Hawaii. More items