The average lead time for a tornado warning in the U.S. is 14 minutes. Depending on the scale of the event, the potential for a tornado outbreak can be detected up to a week or so in advance.
Volcanoes are trickier. Although signs of activity can be detected months or even years before an eruption, we still cannot predict when an eruption will occur.
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Theoretically it depends on the volcano and the city. Some volcanoes give off no signs of a following eruption, therefore preventing people from taking action. A good example of this took place in Pompeii.
If a volcano erupts more explosively, the lava spewing out tends to reach farther, possibly ruining a near by town. If it erupts more quietly, not as much lava tends to spew out. However, any eruption will cause harm to the atmosphere because it releases harmful pollutants.
If a volcano erupts more explosively, the lava spewing out tends to reach farther, possibly ruining a near by town. If it erupts more quietly, not as much lava tends to spew out. However, any eruption will cause harm to the atmosphere because it releases harmful pollutants.
Lava erupts out of a volcano because of the pressure building up in the magma below.
Well volcanoes can cause alot of damage when it erupts like the smoke is chemical you can die from it and the lava can also burn you.Volcanoes don`t occur much as they used to but anyway lets talk about volcanoes.When a volcano erupts you can see the lava and what happens it gets more hotter and there is hotspots in the volcano and when the volcano erupts they come out as well.After the volcano has erupted it is dead.They shoot out magma (molten rock) with lots of energy. When exposed, the magma is called lava.
Sadly, volcano eruptions cannot be reduced or prevented as this is part of nature's occurrence. However, damages caused by volcanic eruptions can be reduced and prevented. For example, evacuation of people during volcano eruption warnings can save lives before the volcano erupts. Property can also be situated further away from the volcano to prevent as much economic losses and so on.
Before a volcano erupts, people are just living their lives, going about their daily routines. There typically wasn't much warning before a major eruption, and there still isn't a good early detection and warning system.
Viscosity is how thick the magma is and this can impact on how much a volcano erupts and how it flows.
If a volcano erupts more explosively, the lava spewing out tends to reach farther, possibly ruining a near by town. If it erupts more quietly, not as much lava tends to spew out. However, any eruption will cause harm to the atmosphere because it releases harmful pollutants.
in thePatagonian desert it rains alot and when the volcano erupts it rains even more
Lava erupts out of a volcano because of the pressure building up in the magma below.
If a volcano erupts more explosively, the lava spewing out tends to reach farther, possibly ruining a near by town. If it erupts more quietly, not as much lava tends to spew out. However, any eruption will cause harm to the atmosphere because it releases harmful pollutants.
Well volcanoes can cause alot of damage when it erupts like the smoke is chemical you can die from it and the lava can also burn you.Volcanoes don`t occur much as they used to but anyway lets talk about volcanoes.When a volcano erupts you can see the lava and what happens it gets more hotter and there is hotspots in the volcano and when the volcano erupts they come out as well.After the volcano has erupted it is dead.They shoot out magma (molten rock) with lots of energy. When exposed, the magma is called lava.
Yellowstone is the site of a very large volcano that is often referred to as a supervolcano. Much of what it erupts is rhyolite.
Sadly, volcano eruptions cannot be reduced or prevented as this is part of nature's occurrence. However, damages caused by volcanic eruptions can be reduced and prevented. For example, evacuation of people during volcano eruption warnings can save lives before the volcano erupts. Property can also be situated further away from the volcano to prevent as much economic losses and so on.
Usually the magma clogs causing major pressure causing the volcano to explode violently or some times movement in the earths crust
Volcanoes underwater erupt in much the same way as those on dry land. They erupt when pressure builds up. The difference between these two types of volcanoes is that the lava produced in an underwater volcano cools dramatically faster than the lava on land.
There is a volcano underneath Yellow Stone National Park, the home of the geyser Old Faithful. Scientists believe that if it erupted it would be 1,000 times the size of Mt. St. Helena. It would not only destroy much of the US but has the power to cause havoc worldwide.