Questions and Answers
Which phrase best describes Osorno?
What happens as magma rises inside a volcano?
Pressure decreases.
How did Old Faithful form?
It is a geyser that formed due to water heated by magma erupting at Earth's surface.
Which words identify stages of volcanic activity? (Check all that apply)
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Which statements are supported by the information in the image? (Check all that apply)
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What causes a volcanic eruption?
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What feature forms at a divergent boundary?
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What best describes a volcano erupting at night in Russia?
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Which features are created on the exterior of a volcano when it erupts? (Check all that apply)
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Which statements describe convergent boundaries? (Check all that apply)
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What phrase describes a volcano that is not expected to erupt again?
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What best describes a quiet eruption caused by low-viscosity magma?
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Study Notes
Volcanoes Overview
- Osorno is categorized as a dormant volcano, indicating it has not erupted in a long time.
- As magma rises within a volcano, the pressure decreases, which can lead to eruptions.
Geysers
- Old Faithful is a geyser formed by water heated by magma, erupting at the Earth's surface periodically.
Stages of Volcanic Activity
- Three classifications of volcanic activity are:
- Active
- Dormant
- Extinct
Geographical Distribution
- Numerous volcanoes are situated on the eastern coast of Asia.
- Some volcanoes are located in the ocean's midsection.
- Many volcanoes are found along the western coasts of North and South America.
Eruptions
- Volcanic eruptions generally result from explosions occurring in magma chambers.
- An eruption can be characterized as quiet when produced by low-viscosity magma, allowing lava to flow gently down the mountainside.
Geological Features
- A rift valley is a distinctive feature created at divergent boundaries.
- When a volcano erupts, it can create:
- Craters
- Lava flows
Tectonic Boundaries
- Convergent boundaries are defined by:
- The occurrence of subduction
- The formation of island arcs in the ocean
- The development of volcanic mountains on land
Extinct Volcanoes
- An extinct volcano is one that is unlikely to erupt again, marking a significant point in volcanic classifications.
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Description
Test your knowledge of volcanoes with these flashcards. Each card presents key concepts such as the characteristics of specific volcanoes, processes involved in magma movement, and the formation of geological features like geysers. Perfect for students of Earth sciences and geology.
