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The three types of magma, named for the rock they form are basaltic, rhyolitic and andesitic. Rhyolitic magma is rich in silica and water vapor.
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What type of magma containing a lot silica and water vapor?
Felsic magma
Type of magma containing a lot of silica and water vapor?
Rhyolitic magma typically contains a high amount of silica and water vapor. It is known for its high viscosity and tendency to produce explosive eruptions due to the buildup of gas pressure within the magma chamber.
What do both silica and water do to magma?
Silica is silicon dioxide. Is is perhaps the most common compound on earth. In magma the amount of silica is key in determining the viscosity. More silica leads to a more viscous magma.
What is the relationship between the amount of gases in magma and the explosiveness a volcanic eruption?
The more gases, water vapor and silica there is in magma the bigger the explosiveness of a volcanic eruption.
What is the specific water vapor and silica conditions that cause differences in eruptions?
Water vapor can make a volcano explode into millions of pieces. Therefore the silica will put it back together, with gravity on its' side. Then lava will concave and erupt therefore making everything in its path rubble.
What is Silica rich thick magma called?
Silica-rich thick magma is called rhyolite. It contains high levels of silica, making it very viscous and typically light in color. Rhyolite is associated with explosive volcanic activity due to the build-up of pressure caused by the slow movement of its thick lava.
What determines whether a volcano will erupt violently or quietly?
if a volcano is high in silica, it will be explosive. If its low in silica, it will be quiet. Two important things that determine whether an eruption will be explosive or quiet: # The amount of water vapor and other gases that are trapped in the magma. # If the magma is basaltic or grantic.
What are two reasons that magma with a high silica content tend to cause explosive eruptions?
Magma with a high silica content tend to cause explosive eruptions because it has a stiff consistency and blocks the vents. When magma pushes from behind it more pressure happens which means the eruption will be explosive. It also prevents gas and water vapor from getting out. The gases will expand until it explodes.
What three things indicate the thickness of magma?
Silica content: Magma with high silica content tends to be more viscous and therefore thicker. Temperature: Hotter magma is usually less viscous and flows more easily. Gas content: The presence of dissolved gases, such as water vapor and carbon dioxide, can affect the viscosity of magma, making it thicker.
What type of volcano has magma that contains large volumes of gases but not silica and water?
A volcano with magma that contains large volumes of gases but not silica and water is typically a shield volcano. These volcanoes have low viscosity magma that allows gases to escape easily, resulting in relatively gentle eruptions characterized by lava flows.
What makes magma thicker?
If there is a high silica content in the magma, the eruption is usually more violent and explosive. Magma with a high silica content flows slower so pressure can build up and eventually erupt.
What can be made up of magma?
Silica, Water and carbon dioxide.
