Open App

UPSC Exam > UPSC Videos > Geography for UPSC CSE > Volcanism

Volcanism Video Lecture | Geography for UPSC CSE

FAQs on Volcanism Video Lecture - Geography for UPSC CSE

1. What causes volcanic eruptions?

Ans.Volcanic eruptions are caused by the movement of magma from beneath the Earth's crust to the surface. This movement is often triggered by the buildup of pressure from gases dissolved in the magma, which can lead to explosive eruptions or lava flows when the pressure is released.

2. What are the different types of volcanoes?

Ans.There are four main types of volcanoes: shield volcanoes, stratovolcanoes (or composite volcanoes), cinder cone volcanoes, and lava domes. Shield volcanoes have gentle slopes and are built from low-viscosity lava, while stratovolcanoes are steeper and formed from alternating layers of lava and ash. Cinder cone volcanoes are the smallest and are built from volcanic ash and debris, and lava domes are formed from the slow accumulation of viscous lava.

3. How do scientists monitor volcanic activity?

Ans.Scientists monitor volcanic activity using various methods, including seismographs to detect earthquakes, GPS to measure ground deformation, gas emissions monitoring, and satellite imagery. These tools help predict eruptions and assess the potential hazards associated with a volcano.

4. What are the hazards associated with volcanic eruptions?

Ans.Volcanic eruptions pose several hazards, including lava flows, ash fall, pyroclastic flows, volcanic gases, and lahars (mudflows). These hazards can cause significant damage to infrastructure, disrupt air travel, and endanger lives, making volcanic monitoring essential for public safety.

5. Can volcanic eruptions affect climate?

Ans.Yes, volcanic eruptions can affect climate. Large eruptions can release significant amounts of ash and sulfur dioxide into the atmosphere, which can lead to short-term cooling of the Earth's surface by reflecting sunlight. This phenomenon can result in altered weather patterns and can impact agriculture and ecosystems.

About this Video

2.6K Views

4.91/5 Rating

Nov 10, 2025 Last updated

Related Exams

UPSC Bank Exams NPSC (Nagaland) HPPSC HPAS (Himachal Pardesh) PPSC PCS (Punjab) Kerala PSC KAS TPSC TCS (Tripura) Delhi Police Constable Insurance Exams Agriculture Exams

Video Description: Volcanism for UPSC 2025 is part of Geography for UPSC CSE preparation. The notes and questions for Volcanism have been prepared according to the UPSC exam syllabus. Information about Volcanism covers all important topics for UPSC 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Volcanism.

Introduction of Volcanism in English is available as part of our Geography for UPSC CSE for UPSC & Volcanism in Hindi for Geography for UPSC CSE course. Download more important topics related with notes, lectures and mock test series for UPSC Exam by signing up for free.

Description

Video/Audio Lecture & Questions for Volcanism Video Lecture | Geography for UPSC CSE - UPSC full syllabus preparation | Free video for UPSC exam to prepare for Geography for UPSC CSE.

Information about Volcanism

Here you can find the meaning of Volcanism defined & explained in the simplest way possible. Besides explaining types of Volcanism theory, EduRev gives you an ample number of questions to practice Volcanism tests, examples and also practice UPSC tests.

	Geography for UPSC CSE 182 videos\|620 docs\|192 tests

Geography for UPSC CSE

182 videos|620 docs|192 tests

Join Course for Free

Explore Courses for UPSC exam

Semester Notes

Exam

mock tests for examination