The Main Cause of Caldera Collapse Is

question 36

Multiple Choice

The main cause of caldera collapse is

• A)a fissure eruption that allows the shield volcano to split into two or more parts.
• B)collapse of the north flank by landslides.
• C)removal of magmas that form pillow basalt.
• D)collapse of the roof of a magma chamber as magma erupts.
• E)All of these are correct.

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Definitions:

Alkaline Solution

A solution with a pH value greater than 7, indicating it has fewer hydrogen ions than pure water and is commonly referred to as basic.

Basic Solution

A solution that has a pH greater than 7, indicating it has a higher concentration of hydroxide ions than hydrogen ions.

Organic Molecules

Compounds primarily made of carbon atoms, often containing hydrogen, oxygen, and other elements, that are the basis of life.

Weak Base

A base that partially dissociates into its ions in an aqueous solution, resulting in a weakly alkaline solution, as opposed to a strong base which fully dissociates.