18 Questions
What is the primary cause of the formation of volcanoes in the Pacific Ring of Fire?
The convergent motion of tectonic plates
What percentage of the world's active and dormant volcanoes are found in the Pacific Ring of Fire?
60%
What is the name of the process that forms volcanoes when an oceanic plate is pushed beneath a continental plate?
Subduction
What is the name of the largest volcano in the world?
Mauna Loa
What is the term for the small volcanoes that form around a main volcano?
Parasitic cones
How many active volcanoes are found in the Philippines?
24
What is the primary reason for magma to rise in a volcanic eruption?
The expansion of dissolved gases in the magma
What type of volcanic arc is formed when an oceanic plate meets a continental plate?
Andean/Volcanic arc
What is the term for the column of magma in the mantle that rises to the surface, forming a volcano?
Mantle plume
What is the term for the large depression formed when a volcano erupts and collapses?
Caldera
What is the relationship between silica content and viscosity in magma?
Viscosity is directly proportional to silica content
What type of volcano is characterized by a near-perfect cone shape?
Strato volcano
What type of volcanic activity is characterized by the movement of tectonic plates away from each other?
Divergent
What is the deadliest component of a volcanic eruption?
Pyroclastic flows
What is the term for the underground tube-like structure that connects the magma chamber to the main vent?
Conduit
What is the name of the famous volcano in Hawaii with a lava dome shape?
Hualalai
What is the process that occurs as magma rises, resulting in eruptions?
The dissolved gases expand and form bubbles
What type of volcanic material is characterized by a glass-like surface?
Obsidian
Explore the process of convergent and divergent plate movement, and how it leads to the formation of volcanic arcs and oceanic trenches. Learn about the three main types of plate movement and their effects on the Earth's surface.
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