Table of Contents
- 1 What are the 2 factors that can affect the explosiveness of a volcanic eruption?
- 2 What are three important factors that affect the explosiveness of a volcanic eruption?
- 3 What makes volcanoes more explosive?
- 4 Which of the following characteristics of magma affects the explosiveness of volcanic eruption?
- 5 Which is a factor in the eruption of a volcano?
- 6 How does the viscosity of magma cause an eruption?
- 7 Which is a factor in the formation of bubbles in magma?
What are the 2 factors that can affect the explosiveness of a volcanic eruption?
A volcano’s explosiveness depends on the composition of the magma (molten rock) and how readily gas can escape from it. As magma rises and pressure is released, gas bubbles (mainly of water vapor and carbon dioxide) form and expand rapidly, causing explosions.
What are three important factors that affect the explosiveness of a volcanic eruption?
There are three main factors that influence the violence of a volcanic eruption: 1. magma viscosity, 2. magma temperature, and 3. amount of dissolved gases.
What are the factors that affects the volcanoes eruptive style?
The style of eruption depends on a number of factors, including the magma chemistry and content, temperature, viscosity (how runny the magma is), volume and how much water and gas is in it, the presence of groundwater, and the plumbing of the volcano.
What makes volcanoes more explosive?
When magma is rapidly expelled from a volcano, it undergoes rapid cooling. This induces the formation of crystals, resulting in a sudden increase in the viscosity of the magma. In turn, this produces magma fragmentation, creating a highly explosive eruption.
Which of the following characteristics of magma affects the explosiveness of volcanic eruption?
More crystals in the magma enable more gas bubbles to form, and so they make an eruption more explosive. The rate at which pressure is reduced also affects the explosiveness. If magma moves slowly toward the surface, gases in the magma have more time to escape.
Which volcanoes have explosive eruptions?
Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions. Cinder cones are the smallest volcanoes and result from accumulation of many small fragments of ejected material.
Which is a factor in the eruption of a volcano?
One other factor is the amount of dissolved volatiles in the magma (chlorine gas, water and other gases). A magma with a lot of dissolved gases will form a lot of large bubbles. It is the bursting of these bubbles that causes an eruption to be explosive, so the more volatiles in the magma, the more violent the eruption.
How does the viscosity of magma cause an eruption?
A magma with a lot of dissolved gases will form a lot of large bubbles. It is the bursting of these bubbles that causes an eruption to be explosive, so the more volatiles in the magma, the more violent the eruption. 2. How does temperature affect the viscosity of magma? High temperature=low viscosity Low temperature=high viscosity
What makes a volcano hotter or less viscous?
A hotter magma will be less viscous One other factor is the amount of dissolved volatiles in the magma (chlorine gas, water and other gases). A magma with a lot of dissolved gases will form a lot of large bubbles.
Which is a factor in the formation of bubbles in magma?
The temperature of the magma is also a factor. One other factor is the amount of dissolved volatiles in the magma (chlorine gas, water and other gases). A magma with a lot of dissolved gases will form a lot of large bubbles.