Activity 2 A. Factors Affecting Volcanic Eruptions Direction: Modified true or false. Write me if the statentent is right, and if is false write the correct word or term on the underlived words on the space provided.
______1. Highly explosive volcanoes tend to have tregtia wiu, sigh silica, high viscosity, and higher gas content ______2. A magma's viscosity is directly related to its silica content. The more silica in lava the less viscosity it has ______3. The higher the temperature of magma is, the lower is its viscosity. ______4. When dissolved gases are high, presswe is high, volcanic eruptions are gentle.
______ 5. If the temperature of lava increases, the viscosity increases. ______6. High viscosity magma las lesser amount of silica.
______7. When dissolved gases are low, pressure is low, and volcanic eruptions are quiet.
______8. Magmas with high silica content are less viscous than those with low silica content.
_______9. When magma has low viscosity, it has small amount of silica. ______10. Temperature of magma and composition of silica are factors affecting volcanic eruptions.
______1. Highly explosive volcanoes tend to have tregtia wiu, sigh silica, high viscosity, and higher gas content ______2. A magma's viscosity is directly related to its silica content. The more silica in lava the less viscosity it has ______3. The higher the temperature of magma is, the lower is its viscosity. ______4. When dissolved gases are high, presswe is high, volcanic eruptions are gentle.
______ 5. If the temperature of lava increases, the viscosity increases. ______6. High viscosity magma las lesser amount of silica.
______7. When dissolved gases are low, pressure is low, and volcanic eruptions are quiet.
______8. Magmas with high silica content are less viscous than those with low silica content.
_______9. When magma has low viscosity, it has small amount of silica. ______10. Temperature of magma and composition of silica are factors affecting volcanic eruptions.
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Answer:
1.true
2.false
3.true
4.false
5.false
6.false
7.true
8.false
9.false
10.true
4.False. When dissolved gases are high, pressure is also high, and volcanic eruptions are explosive.
False. If the temperature of lava increases, the viscosity decreases.
5.False. High viscosity magma has a higher amount of silica.
8.False. Magmas with low silica content are less viscous than those with high silica content.
9.False. When magma has low viscosity, it has a higher amount of silica.