Distribution of Oceans and Continents Ch (4) Practice Quiz in English Part 1 || Class 11 Geography Book -1 Practice Quizzes in English Posted on February 25, 2025February 27, 2025 by Anshul Gupta0% 0 votes, 0 avg 0 Distribution of Oceans and Continents Ch (4)Practice Quiz in English Part 1 || Class 11 Geography Book -1 Practice Quizzes in English 1 / 201. Why were Wegener’s proposed forces for continental drift considered inadequate? A. They were based on in B. They were not supported by evidence C. They were not strong enough D. They were not well understood Explanation: Scholars considered Wegener’s proposed forces to be too weak to move continents. 2 / 202. What was the primary force suggested by Wegener for continental drift? A. Convectional currents B. Volcanic activity C. Pole-fleeing force D. Magnetic forces Explanation: Wegener suggested that the pole-fleeing force, related to the Earth’s rotation, was responsible for continental drift. 3 / 203. What is the tidal force? A. Force caused by volcanic eruptions B. Force due to the Earth's rotation C. Force caused by the attraction of the moon and sun D. Force caused by convectional currents Explanation: The tidal force is caused by the gravitational pull of the moon and sun, creating tides in the oceans. 4 / 204. What problem arises when identical species are found on either side of marine barriers? A. Determining their age B. Explaining their distribution C. Identifying their habitat D. Understanding their evolution Explanation: The presence of identical species on either side of marine barriers raises the question of how they crossed the ocean. 5 / 205. What is the name of the supercontinent that Wegener proposed? A. Panthalassa B. Pangaea C. Gondwanaland D. Laurasia Explanation: Wegener named the supercontinent Pangaea, meaning “all earth.” 6 / 206. What is the convectional current theory? A. Movement of continents due to tidal forces B. Spreading of the sea floor C. Circulation of heat within the mantle D. Formation of mountains due to volcanic activity Explanation: The convectional current theory proposes that heat within the mantle creates circular currents, causing the movement of plates. 7 / 207. What are placer deposits? A. Gold deposits B. Fossil remains C. Glacial deposits D. Volcanic rocks Explanation: Placer deposits are gold deposits found in rivers and streams, formed from the weathering of gold-bearing rocks. 8 / 208. What is the significance of the age of rocks in the oceanic crust? A. They are much older than continental rocks B. Their age is not related to continental drift C. They are the same age as continental rocks D. They are much younger than continental rocks Explanation: Rocks in the oceanic crust are much younger than continental rocks, supporting the idea of seafloor spreading. 9 / 209. What new information did post-World War II discoveries add to the understanding of continental drift? A. Distribution of fossils B. Ocean floor mapping C. Placer deposits D. Tillite formation Explanation: Post-World War II discoveries, particularly ocean floor mapping, provided new insights into the distribution of oceans and continents. 10 / 2010. What are marine deposits found along the coastlines of South America and Africa? A. Tillite B. Precambrian age C. Placer deposits D. Jurassic age Explanation: The earliest marine deposits along the coastlines of South America and Africa are of the Jurassic age, suggesting the ocean did not exist before that time. 11 / 2011. Who first proposed the possibility of continents being joined together? A. Antonio Pellegrini B. Alfred Wegener C. Abraham Ortelius D. Edmond Hess Explanation: Abraham Ortelius, a Dutch map maker, first suggested the possibility of continents being joined together in 1596. 12 / 2012. What is tillite? A. Gold deposits B. Volcanic rock C. Fossils of small reptiles D. Sedimentary rock formed from glaciers Explanation: Tillite is a sedimentary rock formed from glacial deposits, providing evidence of past glaciation. 13 / 2013. What pattern does the distribution of earthquakes and volcanoes show? A. Concentrated in the interior of continents B. Concentrated along coastlines C. Random distribution across the Earth D. Aligned with mid-oceanic ridges and the rim of the Pacific Ocean Explanation: Earthquakes and volcanoes are concentrated along mid-oceanic ridges and the rim of the Pacific Ocean, known as the “Rim of Fire.” 14 / 2014. What did detailed research of the ocean floor reveal? A. It is a vast plain B. It is mostly flat with few features C. It is covered in thick sediments D. It is full of relief Explanation: Research showed that the ocean floor is not a plain but has various features like mountains and trenches. 15 / 2015. What is the significance of gold deposits in Ghana having a source in Brazil? A. Indicates continents were once connected B. Shows evidence of volcanic activity C. Provides evidence of tillite formation D. Explains the distribution of fossils Explanation: The gold deposits in Ghana having a source in Brazil suggest that these continents were once together. 16 / 2016. What does the presence of tillite in different landmasses suggest? A. Identical fossil species B. Similar gold deposits C. Volcanic activity D. Similar geological histories Explanation: The presence of tillite in different landmasses suggests that these landmasses had similar geological histories, including glaciation. 17 / 2017. What evidence does the matching of continents provide? A. Rocks of the same age across oceans B. Tillite deposits C. Placer deposits D. Continents fit together like a jigsaw puzzle Explanation: The matching of continents, particularly the coastlines of Africa and South America, suggests that they were once joined. 18 / 2018. What are mid-oceanic ridges? A. Deep trenches in the ocean floor B. Areas of thick sediment deposits C. Submerged mountain ranges D. Flat plains on the ocean floor Explanation: Mid-oceanic ridges are underwater mountain ranges formed by plate tectonics. 19 / 2019. What is Mesosaurus? A. A volcanic rock B. A fossil plant C. A type of gold deposit D. A small reptile Explanation: Mesosaurus was a small reptile adapted to shallow water, and its fossils are found in both South Africa and Brazil. 20 / 2020. What is the significance of the belt of ancient rocks from Brazil matching those from western Africa? A. Explains the formation of tillite B. Shows the distribution of fossils C. Indicates rocks of the same age across oceans D. Provides evidence for placer deposits Explanation: The matching belts of ancient rocks suggest that these continents were once connected. 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