BPSC (Bihar) Exam > BPSC (Bihar) Videos > Geography for State PSC Exams > Volcanoes
Volcanoes Video Lecture | Geography for State PSC Exams - BPSC (Bihar)
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FAQs on Volcanoes Video Lecture - Geography for State PSC Exams - BPSC (Bihar)
| 1. What is a volcano? |  |
A volcano is a geological formation on Earth's surface that is essentially a vent or opening in the Earth's crust through which molten rock, ash, and gases are released during volcanic eruptions.
| 2. How are volcanoes formed? | |
Volcanoes are formed when there is a rupture or opening in the Earth's crust, allowing magma (molten rock) from beneath the surface to rise and accumulate in a magma chamber. The pressure from the accumulating magma eventually leads to a volcanic eruption, creating a volcano.
| 3. What are the different types of volcanoes? | |
There are several types of volcanoes, including stratovolcanoes (composite volcanoes), shield volcanoes, cinder cone volcanoes, and calderas. Stratovolcanoes are tall and conical with steep sides, shield volcanoes have a broad and gently sloping shape, cinder cone volcanoes are small and cone-shaped, and calderas are large, basin-like depressions formed after a volcanic eruption.
| 4. Are all volcanoes active? | |
No, not all volcanoes are active. Volcanoes can be classified as active, dormant, or extinct. Active volcanoes are those that have erupted recently or are currently erupting. Dormant volcanoes have not erupted in a long time but have the potential to erupt again in the future. Extinct volcanoes are those that are unlikely to erupt again.
| 5. What are the potential hazards associated with volcanoes? | |
Volcanoes can pose various hazards, including lava flows, pyroclastic flows (fast-moving currents of hot gases, ash, and rocks), volcanic ash clouds, volcanic gases (such as sulfur dioxide), lahars (mudflows caused by volcanic activity), and volcanic landslides. These hazards can endanger human lives, damage infrastructure, and have significant impacts on the environment.
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Oct 25, 2024 Last updated |
Video Description: Volcanoes for BPSC (Bihar) 2024 is part of Geography for State PSC Exams preparation.
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