Or that the force of an eruption is measured on the VEI, or Volcanic Explosivity Index? What is the difference between a shield volcano and a stratovolcano? And what were the largest eruptions in human history? All of these facts and more can be found in this fantastic guide to volcanoes...
A volcanic eruption occurs when pressure from gases within molten magma causes it to burst through the Earth's crust, expelling lava, ash, and gases, dramatically altering landscapes and even influencing global climate temporarily. United States Volcanoes With about 170 potentiallyactive volcanoes, the...
The Krakatoa eruption was about ten times more explosive than the Mount St. Helens explosion of 1980 with a VEI of 5.) Tephra (volcanic rock fragments) and hot volcanic gases overcame many of the victims in western Java and Sumatra, but thousands more were killed by the devastating tsunami....
Or that the force of an eruption is measured on the VEI, or Volcanic Explosivity Index? What is the difference between a shield volcano and a stratovolcano? And what were the largest eruptions in human history? All of these facts and more can be found in this fantastic guide to volcanoes...
There are approximately 1,500 active volcanoes, not counting undersea volcanoes. Of these, only about 20-30 erupt in any one year.[17] The Lake Toba supervolcanic eruption nearly 75,000 years ago in Indonesia plunged earth into a volcanic winter (known as the Millennium Ice Age) and was ...
About 30 km beneath your feet is the Earth’s mantle. It’s a region of superhot rock that extends down to the Earth’s core. This region is so hot that molten rock can squeeze out and form giant bubbles of liquid rock called magma chambers. This magma is lighter than the surrounding...
A Tsunami is not just a single wave, but a series of ocean waves called a wave train caused by an underwater earthquake, by a volcanic eruption, landslide, rapid changes in atmospheric pressure, or a meteorite. Incredible Tsunami Facts ...
Pompeii, also known as the forgotten city, was a Roman settlement that was devastated by Volcanic Eruptions in 79 A.D. The city was first occupied by Romans in the 6th century and converted into a Resort city. The Pompeii city is an attraction for archae
eructation,extravasation,eruption- (of volcanos) pouring out fumes or lava (or a deposit so formed) active- (of e.g. volcanos) erupting or liable to erupt; "active volcanos" 2. volcano- a mountain formed by volcanic material mountain,mount- a land mass that projects well above its surro...
A volcanic eruption is an eruption of molten rock, hot rock fragments, and hot gases through a volcano, which is a vent in a planet’s or satellite’s crust. Volcanic eruptions can cause disastrous loss of life and property. Volcanic eruptions play a rol