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What does volcanic activity mean?

Volcanism.


What plate is th Poas Volcano on?

Poás Volcano is located on the boundary between the Cocos Plate and the Caribbean Plate. It is part of the Central Volcanic Range of Costa Rica, which is a region characterized by active volcanism due to the subduction of the Cocos Plate beneath the Caribbean Plate. This tectonic activity contributes to the volcano's eruptions and geothermal features.


What notation indicates the thorium isotope produced?

For example a thorium isotope is Th-231 or 23190 Th.


What does Th mean in the periodic table?

Th is element number 90 on the periodic table It is thorium, it is in the Actinides, and it is radioactive


Is Krakatoa Active today?

Krakatoa, or Krakatau, is a volcano located near the island of Rakata in western Indonesia. It had a history of violent explosions, but lay dormant for almost 200 years. Then, in May 1883, it started to rumble, with the first major explosion occurring on 26 August 26 1883. The following day, there were three more explosions, with the last one being the most devastating. The northern two-thirds of the island was completely destroyed by the explosion. Next, the unsupported volcanic chambers which formed the huge underwater caldera collapsed. This significant activity generated gigantic tsunami waves, up to 40m high above sea level. The tsunami waves wiped out hundreds of villages and towns along the coasts of Java and Sumatra, and killed over 36,000 people. Th steamship Berouw was carried 3km inland by the powerful waves and left 10m above sea level, killing its 28 crew in the incident. The masses of ash, rock and lava formed new islands, while continued eruptions at the volcano since 1927 have built a new island, called Anak Krakatau (child of Krakatoa).