Earthquakes & Volcanoes MCQs for RAS
Practice 20 free Earthquakes & Volcanoes questions under World Geography — Geography.
Strengthen your Earthquakes & Volcanoes knowledge for RAS with curated MCQs. Switch between Hindi and English anytime.
RAS — World Geography — Earthquakes & Volcanoes
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
Match List I (Geographical Region) with List II (Dominant Tectonic Setting) and select the correct answer: List I: a. Ring of Fire b. Mid-Atlantic Ridge c. Hawaiian Islands List II: 1. Mantle Hotspot 2. Divergent Boundary 3. Subduction Zone
Question 2 of 20
Which of the following human activities is primarily responsible for the massive increase in seismicity in regions like Oklahoma, USA?
Question 3 of 20
What proportion of the Earth's surface does the S-wave shadow zone cover for any given earthquake?
Question 4 of 20
What is the primary geodynamic cause of earthquakes associated with Transform plate boundaries?
Question 5 of 20
Which specific mechanical characteristic allows P-waves to successfully travel through solid, liquid, and gas media?
Question 6 of 20
Read the following statements: 1. They are massive, dome-shaped bodies of granitic rock. 2. They form the core of major mountain ranges. 3. They are the solidified remains of extremely large magma chambers. Which geological landform is described by all the statements above?
Question 7 of 20
In the formula used to calculate the velocity of Secondary waves (Vs = √(μ / ρ)), what is notably absent compared to the formula for Primary waves, and why?
Question 8 of 20
Why is the term 'Dormant' applied to volcanoes like Mt. Kilimanjaro?
Question 9 of 20
Consider the following pairs of Volcanism Concepts and their Mechanisms: 1. Decompression Melting : Drop in pressure at divergent boundaries 2. Flux Melting : Subducting plates introducing water into the mantle 3. Magma Cooling : Fast cooling producing small crystals Which of the pairs given above is/are correctly matched?
Question 10 of 20
Assertion (A): Earthquakes generated at the Mid-Atlantic Ridge are generally characterized by massive destruction and very deep focal points. Reason (R): The Mid-Atlantic Ridge is a divergent boundary where tectonic plates move apart, allowing underlying magma to rise and release tension steadily.
Question 11 of 20
Which of the following is an extrusive geothermal feature characterized by the intermittent discharge of naturally heated groundwater and steam?
Question 12 of 20
In geological classification, what precise physiological condition separates an 'Extinct' volcano from a 'Dormant' volcano?
Question 13 of 20
The viscosity of volcanic magma is primarily a function of the content of which of the following compounds?
Question 14 of 20
Consider the following statements regarding the Earth's interior and seismic waves: 1. P-waves can travel through the liquid outer core. 2. When passing from the mantle into the outer core, P-waves are completely absorbed. 3. The path of P-waves changes direction at the mantle-core boundary. Which of the statements given above is/are correct?
Question 15 of 20
An earthquake has a focal depth of 120 km. Under which standard seismological category does this specific earthquake fall?
Question 16 of 20
Which of the following elements is primarily responsible for increasing the viscosity of magma?
Question 17 of 20
Consider the following statements regarding the physical interactions of seismic waves: 1. Surface waves decay more slowly with distance than body waves do. 2. The high amplitude of surface waves renders them the most destructive of all wave types. Which of the statement(s) given above is/are correct?
Question 18 of 20
Which of the following best describes the characteristics of a tsunami propagating in the deep ocean?
Question 19 of 20
What defines a volcano's crater?
Question 20 of 20