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Why does high silica magma tend to form volcanic domes with steep sides?
because the volcano's vent gets plugged, gases cannot escape and pressure build up.
What is the link between the chemical composition of magma and the type of volcanic activity?
High silica magmas can explode violently as its high viscosity causes a greater build up of pressure inside the volcano. Magmas low in silica tend to produce volcanic eruptions that are runny because of low viscosity.
Why are magmas with high silica content dangerous?
High-silica magmas are extremely viscous, and so tend to trap a large amount of gas under pressure. When such magma erupts, it does so explosively.
What type of lava does mt hood have high silica or low silica?
Mount Hood has high silica levels so the lava is felsic (Mt. Hood's silica values are as high as 64%).
Magma that is high in silica and produces explosive eruptions?
High silica magma is light in color, thick, sticky and less dense than basalt magma. The magma that forma volcanoes is rich in silica. High silica magma have low temperatures because magma that is high in silica have the lowest temperatures. Silica rich magma builds a tall cone shaped volcano, a Stratovolcano. Magma that is high in silica resists flowing, so expanding gases are trapped in it. Pressure builds up until the gases blast out in a violent, dangerous explosion.
Why does high silica magma tend to form volcanic domes with steep sides?
because the volcano's vent gets plugged, gases cannot escape and pressure build up.
What is the link between the chemical composition of magma and the type of volcanic activity?
High silica magmas can explode violently as its high viscosity causes a greater build up of pressure inside the volcano. Magmas low in silica tend to produce volcanic eruptions that are runny because of low viscosity.
Why is magma with high levels of silica explosive?
The more silica the volcano has, the more the pressure is occurring and eventually it becomes so strong that the volcano erupts .
Why are magmas with high silica content dangerous?
High-silica magmas are extremely viscous, and so tend to trap a large amount of gas under pressure. When such magma erupts, it does so explosively.
How does a sand washer work?
Sand blaster, silica sand is blown at high pressure as an abrasive.
What type of lava does mt hood have high silica or low silica?
Mount Hood has high silica levels so the lava is felsic (Mt. Hood's silica values are as high as 64%).
How do you turn sand into glass?
With a high concentration of heat and pressure The common glass in window also contains about 75% silica
Magma that is high in silica and produces explosive eruptions?
High silica magma is light in color, thick, sticky and less dense than basalt magma. The magma that forma volcanoes is rich in silica. High silica magma have low temperatures because magma that is high in silica have the lowest temperatures. Silica rich magma builds a tall cone shaped volcano, a Stratovolcano. Magma that is high in silica resists flowing, so expanding gases are trapped in it. Pressure builds up until the gases blast out in a violent, dangerous explosion.
Which flows easier high silica magna or low silica magna?
High silica magma is more viscous (sticky) than low silica magma, so low silica magma lows easier.
Is salt high or low in silica?
Salt does not contain silica.
Does mount erebus have high silica or low silica?
low
Does AAA have high silica?
no it has a generally low amount of silica.
