Volcanoes form in different ways and release different types of lava. There are two main types of volcanoes. Shield volcanoes form when thin, runny lava is released. This magma does not contain a lot of gas, so it has less energy. Because of this, it releases relatively gently and lava flows far down the sides of the volcano before cooling. Shield volcanoes are wide and flat, resembling a shield of armor. Composite volcanoes are formed by magma that contains a lot of gas. The thick magma builds up an enormous amount of pressure, causing an explosive eruption. Lava from a composite volcano cools quickly and doesnt flow very far. As a result, lava piles up and creates mountainous slopes. A composite volcano is most likely what you imagine when you think of a volcano.Which of the following best describes the relationship between gas and volcanic eruptions?

VOLCANOES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Volcanoes form in different ways and release different types of lava. There are two main types of volcanoes. Shield volcanoes form when thin, runny lava is released. This magma does not contain a lot of gas, so it has less energy. Because of this, it releases relatively gently and lava flows far down the sides of the volcano before cooling. Shield volcanoes are wide and flat, resembling a shield of armor. Composite volcanoes are formed by magma that contains a lot of gas. The thick magma builds up an enormous amount of pressure, causing an explosive eruption. Lava from a composite volcano cools quickly and doesn’t flow very far. As a result, lava piles up and creates mountainous slopes. A composite volcano is most likely what you imagine when you think of a volcano.Which of the following best describes the relationship between gas and volcanic eruptions?

A	The more gas magma contains, the more explosive a volcanic eruption will be.
B	The presence of gas in magma decreases the likelihood of a volcanic eruption.
C	As gas builds up in magma, volcanic eruptions occur once in the magma chamber and once above ground.
D	Gas found in magma determines only the intensity of eruptions involving composite volcanoes and not shield volcanoes.

Explanation:

Detailed explanation-1: -There are three basic cone shapes and six eruption types. The three cone shapes are cinder cones, shield cones, and composite cones or stratovolcanoes. The six eruption types are in order from least explosive to the most explosive; Icelandic, Hawaiian, Strombolian, Vulcanian, Pelean, and Plinian.

Detailed explanation-2: -When magma erupts at the surface as lava, it can form different types of volcano depending on: the viscosity, or stickiness, of the magma. the amount of gas in the magma. the composition of the magma.

Detailed explanation-3: -Composite, shield, cinder cones, and supervolcanoes are the main types of volcanoes. Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions.

Detailed explanation-4: -Cinder Cone Volcanoes. Composite Volcanoes (Stratovolcanoes) Shield Volcanoes. 12-Dec-2022

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GEOLOGY

EARTH SCIENCE

VOLCANOES