There are 129 volcanoes in Kamchatka alone, of which 20 are active. The most powerful of the active volcanoes is Klyuchevskaya Sopka. Its height is almost five thousand meters. It is the tallest volcano in the world.
Sailors all over the world know the Itzalko volcano in South America on the Pacific coast. Its height is 2 thousand meters. This volcano is interesting because for two hundred years since its discovery, it has been incessantly active. Every eight minutes, Itzalko throws out a column of steam, stones and ash up to 300 meters high, and lava pours out of the crater.
The volcano serves as a kind of natural beacon for sailors on dark tropical nights, as the light emitted by molten lava can be seen very far away.
The largest geyser is located in the Yellowstone National Park in Wyoming (USA). The height of its boiling jet reaches 60 meters and in an hour it spews 2 million 660 thousand liters of water.
There are more than 1, 500 active volcanoes on Earth.
The name "volcano" originated from the name of Vulcan, the god of fire in Roman mythology.
The world's largest active volcano is Mauna Loa in Hawaii, where the famous coffee is grown in rich volcanic soils. Mauna Loa's area is approximately 80, 000 cubic kilometers.
Volcanoes are like giant safety valves that release the pressure that builds up in the Earth.
Hawaii was formed by 5 volcanoes. Mauna Loa and Kilauea are the only active volcanoes at the moment.
Scientists estimate that at least 200, 000 people have lost their lives to volcanic eruptions over the past 500 years.
People build houses on the slopes of volcanoes because of the rich, fertile soil.
There is evidence that there was volcanic activity on the Moon, Mars, Venus. The largest volcano on Mars is three times taller than the largest volcanoes on Earth. However, on other planets, volcanoes have long gone out.
More than 80 percent of the earth's surface is of volcanic origin. The seabed and some mountains have been shaped by countless volcanic eruptions. Gaseous emissions from volcanoes have formed the earth's atmosphere.
A crater lake in Oregon formed from a tall volcano that lost its summit after a series of huge explosions some 6, 600 years ago.