what are the three main types of volcanic eruptions?
314593
There are three main types of volcano - composite or strato, shield and dome. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. The eruptions from these volcanoes may be a pyroclastic flow rather than a flow of lava.
825206
['Lava meets the sea. ... ', 'Lava meets geothermal plant. ... ', "One of the world's most active volcanos. ... ", 'Kilauea starts smoking on May 3. ... ', 'Dozens of homes destroyed. ... ', 'Poisonous gasses and glass particle steam. ... ', 'Massive damage to roads. ... ', 'Playing golf with an ash cloud.']
1351982
There are four different types of earthquakes: Tectonic, volcanic, collapse and explosion. A tectonic earthquake is one that occurs when the earth's crust breaks due to geological forces on rocks and adjoining plates that cause physical and chemical changes.
142632
The three major types of pollution are air pollution, water pollution, and land pollution. Sometimes, air pollution is visible.
1332200
Think about this... Recall that there are three types of plate boundaries: convergent, divergent, and transform. Volcanism occurs at convergent boundaries (subduction zones) and at divergent boundaries (mid-ocean ridges, continental rifts), but not commonly at transform boundaries.
232484
Three characteristics of magma that mainly affect the explosiveness of a volcanic eruption include gas content, viscosity, and temperature. The gas content of magma mainly affects the explosiveness of a volcanic eruption because the volume of gas expands as the pressure is reduced.
882091
In general, the more felsic the magma the greater the volatile content. So mafic/basaltic volcanoes are fairly quiescent, intermediate/andesitic volcanic eruptions are moderately explosive, and felsic/rhyolitic volcanoes may be extremely explosive.
521070
Volcanic eruptions happen when lava and gas are discharged from a volcanic vent. The most common consequences of this are population movements as large numbers of people are often forced to flee the moving lava flow. Volcanic eruptions often cause temporary food shortages and volcanic ash landslides called Lahar.
1352660
Three characteristics of magma that mainly affect the explosiveness of a volcanic eruption include gas content, viscosity, and temperature. ... A magma with higher viscosity means it has a lot of silica. As a result, the more silica a magma contains the thicker and more explosive it is.
1287313
['Sills: form when magma intrudes between the rock layers, forming a horizontal or gently-dipping sheet of igneous rock. ... ', 'Dykes: form as magma pushes up towards the surface through cracks in the rock. ... ', 'Batholiths:']
1060089
["Solar flare, a large explosion in the Sun's atmosphere.", 'Coronal mass ejection (CME), a massive burst of solar wind, sometimes associated with solar flares. ... ', "Geomagnetic storm, the interaction of the Sun's outburst with Earth's magnetic field."]
978444
A volcanic eruption occurs when molten rock, ash and steam pour through a vent in the earth's crust. Others are slow-flowing fountains of lava, which is hot fluid rock. ... The following are examples of famous volcanic eruptions.
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Igneous intrusions form when magma cools and solidifies before it reaches the surface. Three common types of intrusion are sills, dykes, and batholiths (see image below).
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['Ice Release. ... ', 'Wood Release. ... ', 'Storm Release. ... ', 'Lava Release. ... ', 'Acid Lava Release. ... ', 'Boil Release. ... ', 'Explosion Release. ... ', 'Scorch Release.']
1391276
Volcanic ash is formed during explosive volcanic eruptions. Explosive eruptions occur when gases dissolved in molten rock (magma) expand and escape violently into the air, and also when water is heated by magma and abruptly flashes into steam. The force of the escaping gas violently shatters solid rocks.
948269
There are three main types of volcano - composite or strato, shield and dome. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. ... When composite volcanoes erupt they are explosive and pose a threat to nearby life and property.
672372
The steep-walled caldera contains Lake Toba, the largest volcanic lake on the planet. Erupting at least 2800 km3 of magma in a single event 74,000 years ago, it ranks as the largest volcanic eruption of the Quaternary geologic period, qualifying as an 8.8 magnitude eruption.