What is a volcano Grade 3?
A volcano is a mountain or hill with an opening. When a volcano erupts, magma is pushed up through the opening with great force. When magma reaches the Earth’s surface, it is called lava. Lava can be as hot as 2,200°F (1,204°C). Some volcanic eruptions are explosive.
What is the most powerful volcano in Indonesia?
Mount Tambora
Mount Tambora, also called Mount Tamboro, Indonesian Gunung Tambora, volcanic mountain on the northern coast of Sumbawa island, Indonesia, that in April 1815 exploded in the largest volcanic eruption in recorded history. It is now 2,851 metres (9,354 feet) high, having lost much of its top in the 1815 eruption.
Where was the volcanic eruption in 536 AD?
Iceland
At a workshop at Harvard this week, the team reported that a cataclysmic volcanic eruption in Iceland spewed ash across the Northern Hemisphere early in 536.
Why do Strombolian eruptions happen?
Strombolian eruptions occur when gas inside the volcano coalesces into bubbles, called slugs. These grow large enough to rise through the magma column. Once they reach the top of the magma column, they burst because of the lower air pressure, and throw magma into the air.
Is strombolian eruption explosive or quiet?
Strombolian eruptions are often associated with small lava lakes, which can build up in the conduits of volcanoes. They are one of the least violent of the explosive eruptions, although they can still be very dangerous if bombs or lava flows reach inhabited areas.
Can a volcano eruption reach space?
When the Hunga Tonga-Hunga Ha’apai volcano erupted on Jan. 15, 2022, it sent atmospheric shock waves, sonic booms, and tsunami waves around the world. Now, scientists are finding the volcano’s effects also reached space.
Which is the most active volcano in Indonesia?
Merapi mount is one of active volcanic mountain near the center of the island of Java. The volcano is about 20 miles (32 km) north of Yogyakarta. The name “Merapi” from old Javanese language means “the one of making fire”. It reach the 2,930 meters of highest point or 9,610 ft. It is the most active volcano in Indonesia.
What type of plate boundary do volcanoes in Indonesia belong to?
Most volcanoes in Indonesia belong to the Sunda Volcanic Arc, streching over 3,000 kilometers from NW Sumatra to the Banda Sea. This volcanic arc results from the subduction of Indian Ocean crust beneath the Asian Plate and includes 76% of the region’s volcanoes.
What are the most active volcanoes in East Java?
Lamongan Mount – Snall Strato-volcano with 1651 meters or 5,471 ft. Part of Tengger Caldera complex. Ijen Mount – The most active volcano in East Java till now. It reaches 2,799 meters or 9,183 ft. Karang Mount – Located at the western. Almost end of West Java. It has 1,778 ASL.
What is the history of volcano monitoring in Indonesia?
In 1920, a volcano survey was established by the Dutch-led government, leading to much improved volcano monitoring and reporting. The Volcanological Survey of Indonesia (VSI) now operates a network of 64 volcano observatories continuously monitoring 59 volcanoes.