Theme of the project Volcanoes Fulfilled Sofia Kozariz

Theme of the project: "Volcanoes" Fulfilled: Sofia Kozariz

Eruptions are driven by the rapid expansion of bubbles formed from water and other volatile substances trapped in molten rock as it rises beneath a volcano, and the scale of the eruption is determined during the first 10 seconds of bubble growth in the rocks, scientists at Mc. Gill University in Montreal reported. It's like shaking a bottle of a carbonated soda and then opening the lid, they said, and whether the drink -- or a volcano -- erupts dramatically of slowly is a function of bubble growth and gas loss. The Mc. Gill researchers examined the growth of volcanic bubbles in real time by heating water-bearing molten rock with a laser. Initially thousands of small bubbles per cubic centimeter formed, trapping gas inside them, but they swiftly coalesced into a foam of larger bubbles whose strength rapidly decreased while the rate of gas loss increased. While in most cases gas escapes rapidly enough to outpace bubble growth, resulting in smaller eruptions, under exceptional rates of bubble expansion large eruptions may result, the study found. Even molten rock with small amounts of water has the potential to create devastating, large eruptions, the scientists said.

The largest active volcanos Part of the world Sicily Island 3340 Hvannadalshnukur Island Iceland 2119 Hecla Island Iceland 1491 Vesuvius Italy 1277 Demavend Iran 5604 Kluchevskoy Asia Height, m Aetna Europe Arrangement Kamchatka Peninsula 4750 Kerinchi Sumatra Island 3805 Fujiyama Honshu Island 3776 Name

The largest active volcanos Part of the world Name Meru Arrangement Height, m Tanzania 4567 Karisimbi Rwanda 4507 Phaco Cameroon Teide Canary Islands Orizaba Mexico North America Popocatepetl Mexico Sanford Alaska 4070 3718 5700 5452 4939 Antarctica Erebus Ross Island 3794 Africa

The largest active volcanos Part of the world Chilі - Argentina 6723 San Pedro Chilі 6154 Antofalya Australia and Oceania Height, m Lyulyaylyako South America Arrangement Argentina 6100 Мауна-Лоа Hawaii 4170 Ruapehu New Zealand 2796 Ulavun New Britain Island 2300 Name

Active Volcano Europe Active volcano Aetna Active volcano Hvannadalshnukur

Active Volcano Europe Active volcano Hecla Active volcano Vesuvius

Active Volcano Europe Active volcano in eastern Kamchatka Klyuchevskii Ruiz active volcano before the eruption in 1985.