What determines the type of volcanic eruption?

The style of eruption depends on a number of factors, including the magma chemistry and content, temperature, viscosity (how runny the magma is), volume and how much water and gas is in it, the presence of groundwater, and the plumbing of the volcano.

What determines the type of volcanic eruption quizlet?

The type of volcanic eruption is determined by the magma composition, magma temperature, and amount of dissolved gases.

What are the 3 factors that determine the strength of a volcanic eruption?

There are three main factors that influence the violence of a volcanic eruption: 1. magma viscosity, 2. magma temperature, and 3. amount of dissolved gases.

What primarily determines the eruptive style of a volcano as well as its form?

Explosive eruptions are favored by high gas content & high viscosity magmas (andesitic to rhyolitic magmas). The explosive bursting of bubbles fragments the magma into clots of liquid that cool as they fall through the air. These solid particles become pyroclasts or volcanic ash.

What primary factors determine the nature of volcanic eruptions quizlet?

what are the primary factors that determine the nature of volcanic eruptions? The magma’s composition, it’s temperature and the amount of dissolved gases it contains.

What factor best determines what types of volcano will form in a given area?

The most important factor in determining the shape or type of volcano is the viscosity of the magma that builds the volcano. Viscosity is a measure of a fluid material’s resistance to flow and results from the internal forces and friction between the material’s molecules.

What are the two factors that determine the appearance of a volcano?

The composition of volcanic products. The variety of volcanic eruption types. The geometry of the vent. The environment into which the volcanic products are erupted.

What are the primary factors that determine whether a volcano erupts explosively or relatively quietly?

the primary factors that determine whether a volcano erupts explosively or quietly include characteristics of the magma and the amount of dissolved gases in the magma.

What are the two primary factors that determine how magma erupts?

The two primary factors that determine how magma erupts is its viscosity and gas content.

Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiescent?

Which if the following factors helps determine whether a volcanic eruption will be explosive or relatively quiet? The amount of dissolved gases in the magma, temperature of the magma, and composition of the magma.

Which factor determines whether a volcano will have an explosive violent eruption?

The amount of water vapor and other gases present is one factor that determines whether a volcanic eruption will be quiet or explosive.

Which of the following is a factor that determines the nature of the volcanic eruption?

The primary factors that determine the nature of volcanic eruptions include the magma’s temperature, its composition, and the amount of dissolved gases it contains. As lava cools, it begins to congeal, and as viscosity increases, its mobility decreases. The viscosity of magma is directly related to its silica content.

What are the causes of volcanic eruption Wikipedia?

Eruption mechanisms

Volcanic eruptions arise through three main mechanisms: Gas release under decompression, causing magmatic eruptions. Ejection of entrained particles during steam eruptions, causing phreatic eruptions. Thermal contraction from chilling on contact with water, causing phreatomagmatic eruptions.

What are the main causes of volcano?

What are the 3 main causes of volcanic eruptions?

• The buoyancy of the magma.
• Pressure from the exsolved gases in the magma.
• Increase in pressure on the chamber lid.

What are the four major types of volcanic eruptions?

There are four types of eruptions with properties determined mostly by the silica content of magma, and the amount of gas it contains. In order of increasing explosiveness, these are Hawai’ian, Strombolian, Vulcanian, and Plinian eruptions.

What are the causes of volcanoes?

How are volcanoes formed? Volcanoes are formed by eruptions of lava and ash when magma rises through cracks or weak-spots in the Earth’s crust. A build up of pressure in the earth is released, by things such as a plate movement which forces molten rock to exploded into the air causing a volcanic eruption.

What are volcanic eruptions?

A volcanic eruption is when lava and gas are released from a volcano—sometimes explosively. The most dangerous type of eruption is called a ‘glowing avalanche’ which is when freshly erupted magma flows down the sides of a volcano. They can travel quickly and reach temperatures of up to 1,200 degrees Fahrenheit.

How can volcanic eruptions be prevented?

Protecting yourself during ashfall

1. Stay inside, if possible, with windows and doors closed.
2. Wear long-sleeved shirts and long pants.
3. Use goggles to protect your eyes. …
4. Exposure to ash can harm your health, particularly the respiratory (breathing) tract. …
5. Keep your car or truck engine switched off.