❓ why
Why do volcanic eruptions sometimes create new land?
Quick Answer
Lava, ash, and fragmented rock can pile up above sea level or harden where they meet the ocean. Over time, that buildup can form islands or expand coastlines.
The Full Story
When lava erupts into the sea or on the seafloor, it cools quickly and can stack into thick rock piles. Subaerial eruptions can also build cones and lava fields that rise above the waterline. Iceland is a famous place where ongoing volcanism has repeatedly added new land to the island. New land can also appear after submarine eruptions, such as the 2015–2016 eruption that built a short-lived island near Japan called Nishinoshima.
Key Facts
1.Volcanic eruptions can add new land above sea level
2.Nishinoshima grew after eruptions in 2015–2016
3.Iceland is built largely by repeated volcanism
YouTube Angle
Suggested video title for this topic:
"How volcanoes literally make new land"
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