Plate Tectonics and Volcano Formation
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Plate Tectonics and Volcano Formation

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.

Created by
@HeroicCornet

Questions and Answers

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?

<p>Mauna Loa</p> Signup and view all the answers

What is the term for the small volcanoes that form around a main volcano?

<p>Parasitic cones</p> Signup and view all the answers

How many active volcanoes are found in the Philippines?

<p>24</p> Signup and view all the answers

What is the primary reason for magma to rise in a volcanic eruption?

<p>The expansion of dissolved gases in the magma</p> Signup and view all the answers

What type of volcanic arc is formed when an oceanic plate meets a continental plate?

<p>Andean/Volcanic arc</p> Signup and view all the answers

What is the term for the column of magma in the mantle that rises to the surface, forming a volcano?

<p>Mantle plume</p> Signup and view all the answers

What is the term for the large depression formed when a volcano erupts and collapses?

<p>Caldera</p> Signup and view all the answers

What is the relationship between silica content and viscosity in magma?

<p>Viscosity is directly proportional to silica content</p> Signup and view all the answers

What type of volcano is characterized by a near-perfect cone shape?

<p>Strato volcano</p> Signup and view all the answers

What type of volcanic activity is characterized by the movement of tectonic plates away from each other?

<p>Divergent</p> Signup and view all the answers

What is the deadliest component of a volcanic eruption?

<p>Pyroclastic flows</p> Signup and view all the answers

What is the term for the underground tube-like structure that connects the magma chamber to the main vent?

<p>Conduit</p> Signup and view all the answers

What is the name of the famous volcano in Hawaii with a lava dome shape?

<p>Hualalai</p> Signup and view all the answers

What is the process that occurs as magma rises, resulting in eruptions?

<p>The dissolved gases expand and form bubbles</p> Signup and view all the answers

What type of volcanic material is characterized by a glass-like surface?

<p>Obsidian</p> Signup and view all the answers

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