Magma needs a some sort of level of silica and gas.
inside a shield volcano is a hot surface of mamga
this all has to do with where the volcano is located. some volcanos are located in places where ther is more activity underneath, and other have not so much activity. the more activity, the more violently the volcano will erupt.
The frequency of shield volcano eruptions can vary widely depending on the specific volcano and its geological context. Some shield volcanoes, like Mauna Loa in Hawaii, can erupt frequently, with eruptions occurring every few years or even months. Others may remain dormant for centuries before erupting again. Overall, the eruption patterns are influenced by the movement of magma and tectonic activity in the region.
one is Mauna Lou, on the big island of Hawaii. it is the biggest volcano on earth
Magma, lava, erupt, dormant, cone, cinder,
Being a less dense liquid, it rises toward the surface, seeking the path of least resistance. The volcano is simply a structure created by the rising magma and the surface features of its lava.
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.
A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their large size and low profile, resembling a warrior's shield. This is caused by the highly fluid lava they erupt, which travels farther than lava erupted from more explosive volcanoes. This results in the steady accumulation of broad sheets of lava, building up the shield volcano's distinctive form. Shield volcanoes contain low viscosity magma giving it flowing mafic lava.
In an inactive volcano, magma that is traveling towards the surface of the volcano can trigger eruption. Science is also indicating that earthquakes can be a causative factor in the eruption of a volcano.
When magma rises through the conduit of a volcano, dissolved gases in the magma are released as pressure decreases. As the magma nears the surface, the decreasing pressure causes the gases to form bubbles, which can get trapped within the magma. When the volcano erupts, these trapped gases are released explosively, propelling ash, gas, and lava into the air.
injection of new magma into a chamber that is already filled with magma of similar or different composition. This injection forces some of the magma in the chamber to move up in to the conduit and erupt at the surface.
The Volcano has a huge structure below it. The molten rock deep within it is called Magma. A subsidiary volcano may form from the main body, this is called a Parasitic cone. Some times some volcanic materials may seep out near the volcano, this opening is called Vent. The molten rock erupting from the Volcano is called Lava. The mouth of the volcano is called Crater. The highest point of a volcanic mountain is called Summit while the underground passage of magma is called Conduit. The Channel through which lava is ejected out is called the Throat. Ash or fragments of rocks and lava are what is blasted out forming Ash clouds due to the explosion