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While lava is very hot and can be quite destructive, most lava flows move slowly, giving people time to evacuate. Compared to other dangers from volcanoes, relatively few people have been killed by lava flows.
Volcanic ash, on the other hand, poses number of hazards. Ash carried by wind can move much faster than most lava flows. When inhaled the ash can suffocate people. The ash is much denser than snow, and the weight of it, especially if rained upon, can cause roofs to collapse. If a large amount of ash mixes with water from rain or melting ice from a snow-capped volcano it can form a mudflow called a lahar. Lahars move like flash floods but are as dense as concrete and can bury towns i a matter of minutes. The worst volcanic disaster in recent history occurred in 1985 when the town of Armero, Colombia and a few nearby towns were buried by lahars that left 23,000 people dead.
The most dangerous products of volcanoes are avalanche-like clouds of ash, rock and gas called pyroclastic flows. Pyroclastic flows can be just as hot or nearly as hot as lava flows, but are much faster, often exceeding 100 miles per hour. The heat is enough to kill a person instantly while the force can level steel-reinforced buildings.
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Volcanoes can have runny or sticky molten rock which one is fairly safer?
Sticky magma is more dangerous. The more viscous magma tend not to come out as lava flows, but often come out explosively, producing fast-moving avalanches of hot ash and gas called pyroclastic flows.
Is the lava of Krakatoa AAA or pahoehoe?
Neither. Krakatoa mostly produces ash and pumice rather than lava flows. Those lava flows that do occur are block lava flows, indicating material more viscous than a'a or pahoehoe.
Is the ash or the lava more dangerous in a volcano?
Generally the ash is. Lava flows usually move slowly, allowing plenty of time to escape. Ash, on the other hand, presents a number of dangers. Carried by the wind, an ash cloud can move much faster than most lava flows. Ash can be deadly if too much is inhaled, and the weight of it can cause roofs to collapse. When mixed with water the ash can form mudflows called lahars. Lahars can strike as quickly as flash floods but carry more force. They can bury a town in minutes. Finally there are clouds of superheated ash, rock, and gas called pyroclastic flows. These flows can move down the slopes of a volcano at more than 100 miles per hour, burning everything they hit. In nearly all cases they are inescapable and unsurvivable.
These things come out of a volcano after an eruption?
lava,ash,tephra,volcanic bombs
Are volcanoes the most dangerous because they burn everything in its path with lava?
No. While lava flows are dangerous, they are nowhere near the most dangerous product you see from volcanoes. Lava is very hot, but it usually moves slowly, giving people time to get to safety. The most dangerous volcanic phenomenon is called a pyroclastic flow. These flows are very hot avalanche-like masses of ash, rock and gas that race down the sides of a volcano, often at more than 100 miles per hour, scorching everything they touch. Volcanoes can also rain ash down on the surrounding area and produce deadly muflows called lahars.
Volcanoes can have runny or sticky molten rock which one is fairly safer?
Sticky magma is more dangerous. The more viscous magma tend not to come out as lava flows, but often come out explosively, producing fast-moving avalanches of hot ash and gas called pyroclastic flows.
Is the lava of Krakatoa AAA or pahoehoe?
Neither. Krakatoa mostly produces ash and pumice rather than lava flows. Those lava flows that do occur are block lava flows, indicating material more viscous than a'a or pahoehoe.
Is the ash or the lava more dangerous in a volcano?
Generally the ash is. Lava flows usually move slowly, allowing plenty of time to escape. Ash, on the other hand, presents a number of dangers. Carried by the wind, an ash cloud can move much faster than most lava flows. Ash can be deadly if too much is inhaled, and the weight of it can cause roofs to collapse. When mixed with water the ash can form mudflows called lahars. Lahars can strike as quickly as flash floods but carry more force. They can bury a town in minutes. Finally there are clouds of superheated ash, rock, and gas called pyroclastic flows. These flows can move down the slopes of a volcano at more than 100 miles per hour, burning everything they hit. In nearly all cases they are inescapable and unsurvivable.
These things come out of a volcano after an eruption?
lava,ash,tephra,volcanic bombs
Are volcanoes the most dangerous because they burn everything in its path with lava?
No. While lava flows are dangerous, they are nowhere near the most dangerous product you see from volcanoes. Lava is very hot, but it usually moves slowly, giving people time to get to safety. The most dangerous volcanic phenomenon is called a pyroclastic flow. These flows are very hot avalanche-like masses of ash, rock and gas that race down the sides of a volcano, often at more than 100 miles per hour, scorching everything they touch. Volcanoes can also rain ash down on the surrounding area and produce deadly muflows called lahars.
How big does lava can affect?
Lava has a much more intense, but much smaller effect than ash from a volcana eruption. The lava only effects the immediate area around the volcano, because it cools and hardens quickly.
What can volcano's do?
make lava and destroy thingsVolcanos can also create lots and lots of ash, and lava and rocks. It can erupt and destroy thousands andeven millions of homes and people. Volcanos are very dangerous. Scientist can also measure some kind of waves and predict when it will erupt, but they are not always right. Like if they are right they will evacuate the area/village around it and volcanos can be small or large sized eruptions!--Genius [=
What kills people more smoke or lava in a volcano?
Volcanoes technically don't produce smoke. They release ash and gasses, but not smoke. On another quick note, lava flows and large ash clouds are usually produced by different types of eruption. Ash, overall, is more dangerous. Lava flows are usually slow-moving, giving people time to evacuate, though there are exceptions. Ash spreads much more quickly and much farther. Ashfall can weigh down on roofs, causing them to collapse, as it is actually quite dense. The ash can also damage the lungs and eyes. The most dangerous event, though, is a pyroclastic flow. These are avalanche-like flows of superheated ash, rock, and gas that race down a volcano's slopes during an explosive eruption. They often move at speeds of over 100 mph and are unsurvivable.
Was Pompeii covered in ash or lava?
Both, but most of the mass expulsed by the explosion was in the form of ash
What volcano is more dangerous land or water?
Land based volcanoes are more dangerous to people. More important is the type of lava, based on viscosity. Highly viscous lavas tend to cause explosive eruptions, like Mt. Saint Helens, while low viscosity lava tends to flow after eruption, without the ash and pyroclastic effects associated with highly viscous lavas.
How does a volcano cause a lot of damage?
when it erupts the lava can flow to places and the ash cloud and gases from the volcano are very dangerous for humans.
Does Mount Pinatubo have AAA lava?
No. Pinatubo tends to produce ash and pumice rather than lava flows. A'a is a textural variety of basaltic lava. Pinatubo in recent history has erupted dacitic material, which is far more viscous.
