Question 1 26 The typical volcanic eruption is strongly influenced by the viscosity and amount of dissolved gases in the magma. The more viscous the material, the greater is its resistance to flow. Which of the following combined characteristics will most likely result in an explosive volcanic eruption? A low viscosity, low amount of dissolved gases B high viscosity, high amount of dissolved gases C low viscosity, high amount of dissolved gases D high viscosity, low amount of dissoved gases Answer The most likely combined characteristics to result in an explosive volcanic eruption are a high viscosity and high amount of dissolved gases, option B. This is due to the fact that viscosity, or the thickness of the magma, plays a crucial role in determining the explosivity of a volcanic eruption. Highly viscous magma is thicker and more resistant to flow, resulting in a build up of pressure within the volcano. When this pressure is released through a volcanic eruption, it can result in a powerful and explosive release of gas, ash, and lava. In addition, the amount of dissolved gases in the magma also contributes to the explosivity of a volcanic eruption. Magma contains dissolved gases such as water vapor, carbon dioxide, and sulfur dioxide. As the magma rises to the surface, the decrease in pressure causes the gases to expand and form bubbles. This can create even more pressure within the volcano, resulting in a more explosive eruption. Why the other answers are wrong: Option A, a low viscosity and low amount of dissolved gases, would result in a less explosive eruption because the magma is able to flow more easily and release its gases before reaching the surface. Option C, a low viscosity and high amount of dissolved gases, would also result in a less explosive eruption because while there may be a high amount of gas present, the low viscosity of the magma would allow it to flow more easily and release the pressure before an explosive build up can occur. Option D, a high viscosity and low amount of dissolved gases, would also result in a less explosive eruption because the thick magma would not be able to move as easily and therefore, the release of gases and pressure would not be as powerful. Question 2 Infographics about minerals, what is minerals, example of minerals, state significance, what is importance of minerals in terms of economy, health, and scientific Answer qt-news_science_products. Question 3 26 The typical volcanic eruption is strongly influenced by the viscosity and amount of dissolved gases in the magma. The more viscous the material, the greater is its resistance to flow. Which of the following combined characteristics will most likely result in an explosive volcanic eruption? A low viscosity, low amount of dissolved gases B high viscosity, high amount of dissolved gases C low viscosity, high amount of dissolved gases D high viscosity, low amount of dissoved gases Answer qt-science_center_objects