News Excerpt:
On the island of Sicily in Italy, the Mount Etna volcano started to erupt, spewing ash miles into the sky and down on Catania Airport.
About Mount Etna:
- Mount Etna is Europe’s most active volcano and one of the largest in the world.
- Its recorded volcanic activity dates back to 1500 B.C. Since then, it has erupted more than 200 times.
- It is the highest Mediterranean island mountain and the most active stratovolcano in the world.
Other volcanoes that have erupted for much longer than Etna:
- Kilauea volcano in Hawaii: It started to erupt in 1983 and continued till 2018. In 2021, the eruption started again and is still ongoing.
- Dukono in Indonesia: It started erupting in 1933 and is continuing.
- Santa Maria in Guatemala: It began erupting in 1922 and continues to this day.
- Yasur in Vanuatu: It first rumbled to life in about 1270 (± 110 years) and as of June 9, 2023, was still erupting.
About Volcano:
- Volcanoes are openings, or vents where lava, small rocks, and steam erupt onto the Earth’s surface.
- Volcanoes can be on land and in the ocean.
- Mountain ranges like the Andes in South America and the Rockies in North America have been formed through the movement and collision of tectonic plates.
- There are four main types of volcanoes: cinder cones, composite or stratovolcanoes, shield volcanoes, and lava domes.
- Their type is determined by how the lava from an eruption flows and how that flow affects the volcano, and, as a result, how it affects its surrounding environment.
How do volcanoes erupt?
- It is magma, or the molten rock, below the surface of the Earth which rises up.
- The magma finds its way to vents in the volcano and gets spewed across the land and into the atmosphere. When magma erupts from a volcano, it is called lava.
Can scientists predict volcanic eruptions?
- Volcanic eruptions can be predicted by scientists hours, or even days, in advance.
- Earthquakes, on the other hand, are far more unpredictable.
- Seismographic data from earthquakes and other tremors is used by scientists because it can indicate when a volcanic eruption will occur.
- They monitor the ground for signs of deformation, which may be caused by the movement of magma.
- They also record variations in magnetic and gravitational fields, as well as releases of volcanic gas.