Earthquakes & Volcanoes MCQs for LDC
Practice 20 free Earthquakes & Volcanoes questions under World Geography — Geography.
Strengthen your Earthquakes & Volcanoes knowledge for LDC with curated MCQs. Switch between Hindi and English anytime.
LDC — World Geography — Earthquakes & Volcanoes
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
Consider the following formulas related to seismic velocity: 1. Vp involves both the bulk modulus (K) and shear modulus (μ). 2. Vs involves only the bulk modulus (K) and density (ρ). Which of the statements is/are mathematically correct according to wave physics?
Question 2 of 20
Why is the term 'Dormant' applied to volcanoes like Mt. Kilimanjaro?
Question 3 of 20
Large volcanic eruptions can lead to a temporary cooling of the Earth's surface, often referred to as a 'volcanic winter'. What is the primary atmospheric mechanism responsible for this phenomenon?
Question 4 of 20
Consider the following statements regarding the generation of Surface waves (L-waves): 1. They are generated directly at the focus of the earthquake deep within the Earth. 2. They are produced when body waves interact with surface materials. Which of the statement(s) given above is/are correct?
Question 5 of 20
When defining the mechanics of an earthquake, what specifically dictates the 'elastic limit' referenced in the Elastic Rebound Theory?
Question 6 of 20
Match List-I (Seismic Wave Type) with List-II (Medium of Propagation) correctly: List-I 1. P-Waves 2. S-Waves 3. L-Waves List-II A. Solid only B. Surface rocks C. Solid, Liquid, and Gas Choose the correct option:
Question 7 of 20
Which statement correctly describes the refraction of Primary waves (P-waves)?
Question 8 of 20
Consider the mathematical formula for the velocity of a Primary wave: Vp = √((K + 4/3μ) / ρ). In this equation, what does the symbol 'K' specifically represent?
Question 9 of 20
Which of the following is NOT an example of a dormant volcano?
Question 10 of 20
Which of the following events is strictly categorized as an Anthropogenic (Human-Induced) cause of seismicity?
Question 11 of 20
Assertion (A): P-waves are always recorded by seismographs before S-waves from the same earthquake. Reason (R): P-waves are compressional waves that move faster through rocky mediums than transverse shear waves. Select the correct option:
Question 12 of 20
Which of the following is an extrusive geothermal feature characterized by the intermittent discharge of naturally heated groundwater and steam?
Question 13 of 20
In the context of igneous rock formation, which pairing is strictly accurate regarding magma and lava?
Question 14 of 20
Which geographical features are the primary sites for 'Flux Melting'?
Question 15 of 20
Consider the following statements regarding Mid-Ocean Ridge Volcanoes: 1. They occur primarily at convergent plate boundaries. 2. They are responsible for the formation of new oceanic crust. Which of the statements given above is/are correct?
Question 16 of 20
If the shear modulus (μ) of a geological layer is mathematically zero, what will happen to an incoming Secondary wave (S-wave)?
Question 17 of 20
Secondary waves (S-waves) are characterized as shear waves because their particle motion is:
Question 18 of 20
Which of the following correctly pairs a volcanic landform with its defining characteristic?
Question 19 of 20
Consider the following statements regarding the impact of large dams on tectonic activity: 1. The immense weight of water in large reservoirs can alter the stress on underlying geological faults. 2. Water seeping into the ground decreases pore pressure, which increases friction and prevents earthquakes. Which of the statements given above is/are correct?
Question 20 of 20