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If relatively small amounts of water mix with ash it makes the ash heavier, which can cause roofs to collapse. Larger amounts of water can turn the ash int mud and cause dangerous mudflows called lahars.

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Volcanic ash from an eruption is hazardoes because?

could mix with snow and water to cause mudslides


What is a mudflow that forms when volcano ash and debris mix with water?

A mudflow formed by volcanic ash and debris mixing with water is called a lahar. Lahars can travel quickly down the slopes of a volcano, carrying a mixture of water, rock, and debris that can be extremely destructive.


What happens when a volcano gets water on it?

When water enters the vent or crater of a volcano, it can mix with the magma, causing explosive eruptions due to the rapid expansion of steam. This can lead to lahars (mudflows) and pyroclastic flows, posing significant hazards to nearby areas. Additionally, the interaction of water with the hot volcanic rocks can generate volcanic ash clouds and steam explosions.


Can Volcanic ash mix with rain to form mud?

Yes, volcanic ash can mix with rainwater to form a type of mud called lahar. Lahars are fast-moving mudflows that can travel long distances from a volcano's summit during or after an eruption. They pose significant hazards to communities living near active volcanoes.


How do you make a volcano with ash?

The ash in question is not like charcoal ash or cigarette ash, it is a dust made form fine particles of rock. The ash comes out of the volcano very hot and when it lands it sets like concrete to form a hard rock called a 'Tuff'. It is the Tuff that forms the volcano.


Why do volcanoes in the Philippines releases lahar while in the other countries it releases magma?

Magma comes out of all volcanoes, though it is called lava once it reaches the surface. In an explosive volcanic eruption, however, the magma does not become lava, but instead forms tiny particles of glass called volcanic ash. This ash can then mix with water to form muflows called lahars. Lahars are not limited to the Philippines, but can occur anywhere that there are sufficient amounts of ash and water.


Is volcanic ash dangerous?

Volcanic ash is extremely abrasive, so that if an aeroplane flies into an ash cloud, the ash will abrade the windows of the cockpit and make them impossible to see through. It can also be melted by high heat and the solidifies to form glass, which is a major problem for aeroplane engines. If mixed with water it forms a type of mud (a mudflow of this sort is known as a lahar), which solidifies as hard as concrete. It it also heavy, so that if it builds up on the roofs of buildings, it can make them collapse. If it is inhaled, it can mix with the fluid in the lungs and cause asphyxiation.


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