There are more than 1500 active volcanoes on the Earth.
The name "volcano" has its origin from the name of Vulcan, a god of fire in Roman mythology.
The world's largest, active volcano is Mauna Loa in Hawaii, where famous coffee is grown in the rich volcanic soils.
Mauna Loa is 13,677 feet above sea level. From its base below sea level to its summit, Mauna Loa is taller than Mount Everest. Mauna Loa is about 36 m (120 ft) lower than its neighbour, Mauna Kea.
Mauna Loa's whole volume is about 80,000 cubic kilometres.
Volcanoes are like giant safety valves that release the pressure that builds up inside the Earth.
Lava cools slowly because lava is a poor conductor of heat. Lava flows slow down and thicken as they harden.
Hawaii was formed by 5 volcanoes. Mauna Loa, and Kilauea are the only active volcanoes.
Scientists have estimated that at least 200,000 persons have lost their lives as a result of volcanic eruptions during the last 500 years.
People set up homes on the slopes of volcanoes because of the rich, fertile soil produced.
There is evidence that there was volcanic activity on the moon, Mars, Venus and IO. The largest volcano on Mars is three times as high as the biggest Earth volcanoes. However they are extinct.
More than 80 percent of the earth's surface is volcanic in origin. The sea floor and some mountains were formed by countless volcanic eruptions. Gaseous emissions from volcano formed the earth's atmosphere.
The May 18, 1980 eruption of Mount St. Helens in the Cascade Range of Washington State happened after more than 100 years of dormancy (a time when the volcano was "asleep.") When the volcano erupted, it took the lives of 58 people and caused $1.2 billion in damage.
The rock debris carried by a lateral blast of Mount St. Helens traveled as fast as 250 miles per hour.
Crater Lake in Oregon formed from a high volcano that lost its top after a series of tremendous explosions about 6,600 years ago.
Sometimes lightning is seen in volcanic clouds. It's not clear why this happens but it could be to do with lots of hot particles bashing into each other, causing static charges.
One in 10 people in the world live within 'danger range' of an active volcano.
The name "volcano" has its origin from the name of Vulcan, a god of fire in Roman mythology.
The world's largest, active volcano is Mauna Loa in Hawaii, where famous coffee is grown in the rich volcanic soils.
Mauna Loa is 13,677 feet above sea level. From its base below sea level to its summit, Mauna Loa is taller than Mount Everest. Mauna Loa is about 36 m (120 ft) lower than its neighbour, Mauna Kea.
Mauna Loa's whole volume is about 80,000 cubic kilometres.
Volcanoes are like giant safety valves that release the pressure that builds up inside the Earth.
Lava cools slowly because lava is a poor conductor of heat. Lava flows slow down and thicken as they harden.
Hawaii was formed by 5 volcanoes. Mauna Loa, and Kilauea are the only active volcanoes.
Scientists have estimated that at least 200,000 persons have lost their lives as a result of volcanic eruptions during the last 500 years.
People set up homes on the slopes of volcanoes because of the rich, fertile soil produced.
There is evidence that there was volcanic activity on the moon, Mars, Venus and IO. The largest volcano on Mars is three times as high as the biggest Earth volcanoes. However they are extinct.
More than 80 percent of the earth's surface is volcanic in origin. The sea floor and some mountains were formed by countless volcanic eruptions. Gaseous emissions from volcano formed the earth's atmosphere.
The May 18, 1980 eruption of Mount St. Helens in the Cascade Range of Washington State happened after more than 100 years of dormancy (a time when the volcano was "asleep.") When the volcano erupted, it took the lives of 58 people and caused $1.2 billion in damage.
The rock debris carried by a lateral blast of Mount St. Helens traveled as fast as 250 miles per hour.
Crater Lake in Oregon formed from a high volcano that lost its top after a series of tremendous explosions about 6,600 years ago.
Sometimes lightning is seen in volcanic clouds. It's not clear why this happens but it could be to do with lots of hot particles bashing into each other, causing static charges.
One in 10 people in the world live within 'danger range' of an active volcano.
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