Educational diagram illustrating the internal structure of a volcano with labeled components.

Diagram showing the structure of a volcano with labeled parts, including magma chamber, vent, and crater, used in a worksheet titled "What causes volcanoes?"

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Show Answer Key & Explanations Step-by-step solution for: What Causes Volcanoes? Worksheet for 4th - 8th Grade | Lesson Planet

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1.
a: Magma chamber
b: Pipe
c: Vent
d: Lava flow
e: Crater

2.
(i) Divergent plate boundaries – Example: Mid-Atlantic Ridge
(ii) Convergent plate boundaries – Example: Andes Mountains
(iii) Hot spots – Example: Hawaiian Islands

3.
The Pacific Ring of Fire is a region around the Pacific Ocean where many tectonic plates meet, causing frequent earthquakes and volcanic eruptions. Most of the world’s active volcanoes are located here due to subduction zones where oceanic plates dive beneath continental plates, melting rock and generating magma that rises to the surface.

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