Magma builds up in the mountain and starts to rumble. Then the rock at the bottom starts to push up causing the magma to go up and rise the temperature of it. As it nears the opening it becomes lava and turns into ash as it burns up.
It was volcanic ash and dust cloud ejected into the upper atmosphere by the explosion of the volcano.
Both, but most of the mass expulsed by the explosion was in the form of ash
You get a rather large explosion.
-Avoid areas downstream of the volcano-Listen to emergency information and alerts-Protect yourself from falling ash-evacuate ASAP-Avoid crossing bridges
An ash cloud is something which comes out of the volcano
No. An ash fall is not a volcano; it is a product of some volcanic erputions.
There are two ways a volcano can produce an ash cloud. In most cases gas-rich magma rises inside the volcano. The gas is dissolved in the magma under pressure. As the magma approaches the surface the pressure decreases and the gas is released and expands rapidly, producing an explosion. The magma is blasted apart into tiny particles, which we call ash. The hot gasses then rise, taking much of the ash with them. In other gases, water inside a volcano may come in contact with magma or rocks heated by magma, causing steam explosions. These explosions pulverize some of the rock inside the volcano, during it into ash.
Karymsky is an ongoing volcano eruption in Eastern Kamchatka. This has been a weak eruption. Another one is Shiveluch in Central Kamchatka. Shiveluch produced an ash explosion on May 30, 2014.
If a "super volcano" erupted, depending on how big you are actually talking, the immediate area of the volcano would be engulfed in ash, rock, and of course lava. If you survived that the ash cloud would kill you. If the eruption was big enough, the ash cloud could cover half the world or even more and it could cause an ice age to happen in the future that could kill off the rest of the human race if they were not prepared.
Eyjafjallajoekull volcano
No. Ice does not create an ash cloud when a volcano erupts. You cannot prevent the formation of an ash cloud.
Volcano ash hazard can be dangerous.