CLASS 7 CHAPTER 2 Inside Our Earth MCQs

mcqs = [ (“What is the earth compared to in terms of its layers?”, {“A”: “An apple”, “B”: “An onion”, “C”: “A coconut”, “D”: “A watermelon”}, “B”), (“What is the uppermost layer of the earth’s surface called?”, {“A”: “Mantle”, “B”: “Core”, “C”: “Crust”, “D”: “Lithosphere”}, “C”), (“What are the main mineral constituents of the continental crust?”, {“A”: “Silica and alumina (Sial)”, “B”: “Silica and magnesium (Sima)”, “C”: “Nickel and iron (Nife)”, “D”: “Carbon and hydrogen”}, “A”), (“What is the main composition of the oceanic crust?”, {“A”: “Sial”, “B”: “Sima”, “C”: “Nife”, “D”: “Mantle”}, “B”), (“What layer lies beneath the earth’s crust?”, {“A”: “Core”, “B”: “Mantle”, “C”: “Lithosphere”, “D”: “Outer core”}, “B”), (“What is the innermost layer of the Earth called?”, {“A”: “Mantle”, “B”: “Crust”, “C”: “Core”, “D”: “Lithosphere”}, “C”), (“What is the core primarily composed of?”, {“A”: “Silica and alumina”, “B”: “Iron and nickel”, “C”: “Magnesium and calcium”, “D”: “Silica and magnesium”}, “B”), (“Which layer of the Earth is semi-solid and lies beneath the crust?”, {“A”: “Mantle”, “B”: “Core”, “C”: “Crust”, “D”: “Asthenosphere”}, “A”), (“What term is used for the outermost solid part of the Earth?”, {“A”: “Lithosphere”, “B”: “Mantle”, “C”: “Core”, “D”: “Asthenosphere”}, “A”), (“What is the primary function of the mantle?”, {“A”: “To support the atmosphere”, “B”: “To act as a transition layer between the crust and core”, “C”: “To provide minerals and metals”, “D”: “To serve as a layer for the formation of mountains”}, “B”), (“What are the three main types of rocks?”, {“A”: “Igneous, Sedimentary, Metamorphic”, “B”: “Crust, Mantle, Core”, “C”: “Mineral, Organic, Metallic”, “D”: “Volcanic, Plutonic, Fossil”}, “A”), (“Which type of rock is formed by the cooling and solidification of magma?”, {“A”: “Sedimentary”, “B”: “Metamorphic”, “C”: “Igneous”, “D”: “Volcanic”}, “C”), (“What process leads to the formation of sedimentary rocks?”, {“A”: “Cooling of magma”, “B”: “Heat and pressure applied to existing rocks”, “C”: “Accumulation and compaction of sediments”, “D”: “Crystallization of minerals”}, “C”), (“Which of the following is an example of an igneous rock?”, {“A”: “Limestone”, “B”: “Granite”, “C”: “Marble”, “D”: “Shale”}, “B”), (“How are metamorphic rocks formed?”, {“A”: “By melting and solidifying magma”, “B”: “Through the deposition of sediments”, “C”: “By applying heat and pressure to existing rocks”, “D”: “Through volcanic eruptions”}, “C”), (“What type of rock is formed from molten magma that cools and solidifies beneath the Earth’s surface?”, {“A”: “Extrusive igneous rock”, “B”: “Sedimentary rock”, “C”: “Intrusive igneous rock”, “D”: “Metamorphic rock”}, “C”), (“Which of the following is an example of an extrusive igneous rock?”, {“A”: “Granite”, “B”: “Basalt”, “C”: “Marble”, “D”: “Sandstone”}, “B”), (“What process causes sedimentary rocks to transform into metamorphic rocks?”, {“A”: “Erosion”, “B”: “Cooling and solidification”, “C”: “Heat and pressure”, “D”: “Compaction of sediments”}, “C”), (“Which rock type is often formed from the remains of plants and animals?”, {“A”: “Igneous rock”, “B”: “Metamorphic rock”, “C”: “Sedimentary rock”, “D”: “Volcanic rock”}, “C”), (“What distinguishes intrusive igneous rocks from extrusive igneous rocks?”, {“A”: “Their chemical composition”, “B”: “The location where they cool and solidify”, “C”: “The presence of fossils”, “D”: “Their texture”}, “B”), (“What is the process called when rocks break down into smaller pieces due to weathering?”, {“A”: “Erosion”, “B”: “Sedimentation”, “C”: “Lithification”, “D”: “Weathering”}, “D”), (“Which type of rock can form from the compression and cementation of sediment?”, {“A”: “Igneous rock”, “B”: “Metamorphic rock”, “C”: “Sedimentary rock”, “D”: “Basalt”}, “C”), (“What is a common feature of sedimentary rocks?”, {“A”: “They contain no fossils”, “B”: “They form from cooled magma”, “C”: “They often contain layers and fossils”, “D”: “They are always crystalline”}, “C”), (“Which of the following is a key characteristic of metamorphic rocks?”, {“A”: “They are always formed from lava”, “B”: “They are formed under high pressure and temperature”, “C”: “They never contain minerals”, “D”: “They are formed only from sediment”}, “B”), (“What role do living organisms play in the rock cycle?”, {“A”: “They only contribute to the formation of igneous rocks”, “B”: “They help in the formation of sedimentary rocks through accumulation”, “C”: “They have no role in the rock cycle”, “D”: “They only influence metamorphic rocks”}, “B”) ]