MCQ Chapter 2 Geography Class 8 Maharashtra Board INTERIOR OF THE EARTH 1. The Earth’s interior was formed through which process? Evaporation Radiation Condensation PrecipitationQuestion 1 of 202. What is the outermost layer of the Earth called? Mantle Core Crust LithosphereQuestion 2 of 203. What is the average thickness of the Earth’s crust? 10 km 20 km 30-35 km 50 kmQuestion 3 of 204. What is the primary composition of the continental crust? Silica and Magnesium Silica and Iron Silica and Aluminum Magnesium and NickelQuestion 4 of 205. The oceanic crust is mainly composed of which materials? Silica and Aluminum Silica and Magnesium Nickel and Iron Granite and BasaltQuestion 5 of 206. Which discontinuity exists between the crust and the mantle? Conrad Discontinuity Mohorovicic Discontinuity Gutenberg Discontinuity Lehmann DiscontinuityQuestion 6 of 207. What is the name of the layer below the crust? Core Mantle Lithosphere AsthenosphereQuestion 7 of 208. The upper part of the mantle is known as? Lithosphere Asthenosphere Crust CoreQuestion 8 of 209. Which layer of the Earth contains magma chambers? Outer Core Inner Core Asthenosphere Continental CrustQuestion 9 of 2010. What is the estimated depth of the mantle? 35 km 700 km 2900 km 6371 kmQuestion 10 of 2011. The Earth's core is mainly composed of which elements? Silica and Aluminum Iron and Nickel Magnesium and Calcium Gold and SilverQuestion 11 of 2012. The outer core of the Earth is in which state? Solid Liquid Gaseous Semi-SolidQuestion 12 of 2013. Which seismic waves cannot pass through the outer core? Primary waves Surface waves Secondary waves Oceanic wavesQuestion 13 of 2014. What is the approximate temperature of the Earth's inner core? 1000°C 2000°C 4000°C 6000°CQuestion 14 of 2015. Which scientist discovered the discontinuity between the mantle and core? Mohorovicic Gutenberg Lehmann ConradQuestion 15 of 2016. The Earth's magnetosphere is generated due to movements in which layer? Crust Mantle Outer Core Inner CoreQuestion 16 of 2017. What is the density of the inner core? 4.5 gm/cm³ 5.7 gm/cm³ 9.8 gm/cm³ 13.3 gm/cm³Question 17 of 2018. What causes earthquakes? Movement of tectonic plates Changes in atmospheric pressure Human activities Ocean currentsQuestion 18 of 2019. What happens to temperature as we move toward the Earth's core? It decreases It remains constant It increases It fluctuatesQuestion 19 of 2020. Why is the inner core solid despite high temperatures? Due to the presence of water Due to extreme pressure Due to lack of oxygen Due to volcanic activityQuestion 20 of 20 Loading...
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