Factors affecting Eruptive Style

1. What determines the nature of eruption?

• Formation of gas bubbles

• Temperature

• Silica Content

• Increase of Pressure

2. 2. What causes the volcanoes to erupt?

• Increased in Magma’s Temperature

• Ashes

• Silica Content

• Increased in Magma’s Temperature

3. 3.Which of the following factors associated with huge volcanic eruptions may cause the decrease in the Earth’s average  temperature for a few years?

• Heat

• Light

• Acid rain

• Volcanic Ash

What is the main factor that determines the explosiveness of a volcanic eruption?

• Viscosity of the magma

• Presence of water in the magma

• Depth of the magma chamber

• Size of the volcano

What role does the composition of volcanic gases play in determining the type of eruption?

• Determines the color of the eruption plume

• Affects the duration of the eruption

• Influences the speed of lava flow

• Indicates the presence of water in the magma

What is the primary cause of volcanic earthquakes?

• Movement of magma beneath the surface

• Friction between tectonic plates

• Release of pressure from the volcano

• Impact of volcanic eruptions

Which of the following characteristics of magma mainly affect the explosiveness of a volcanic eruption?

• Color

• Amount of Silica

• Temperature

• Silica content