Structure of Volcanoes (Grade 10 NSC Matric Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the main function of a volcano's vent?
What is the main function of a volcano's vent?
Pathway for magma/gas/ash to surface
What role does the magma chamber serve in a volcanic system?
What role does the magma chamber serve in a volcanic system?
Underground reservoir storing molten rock
Where is the crater located on a volcano?
Where is the crater located on a volcano?
At the summit as a bowl-shaped opening
How does a volcanic cone form over time?
How does a volcanic cone form over time?
Layers of lava/ash accumulate each time
What are secondary cones on a volcano?
What are secondary cones on a volcano?
Smaller structures on main volcano flanks
What causes a caldera to form?
What causes a caldera to form?
Cone collapses into emptied magma chamber
What happens during Stage 1 of caldera formation?
What happens during Stage 1 of caldera formation?
Violent eruptions weaken cone structure
How powerful are caldera-forming eruptions compared to typical volcanic eruptions?
How powerful are caldera-forming eruptions compared to typical volcanic eruptions?
Thousands of times greater power
What is Wizard Island in Crater Lake?
What is Wizard Island in Crater Lake?
A new volcanic cone after the collapse
How many basic structural elements do all volcanoes share?
How many basic structural elements do all volcanoes share?
Four elements