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Subjects

Geography

Evolution of the earth

In this Class 11 Geography topic from “The Origin and Evolution of the Earth,” students trace how Earth formed and changed over geological time. They learn about the early solar nebula, the separation of materials within the young planet, the development of the crust, atmosphere and oceans, and the gradual emergence of life. The topic connects major stages of Earth’s evolution with the geological processes that shaped its present structure.

Easy · Level 6 · 23 questions

Practice questions

01After photosynthesis increased oxygen better conditions formed for which type of life?

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02In Earth's evolution the mantle is the major layer located between what?

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03During differentiation where did lighter materials generally remain?

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04What became possible when the surface of early Earth cooled?

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05Presence of gases like ammonia and methane on early Earth indicates which condition?

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06The role of carbon dioxide in Earth's evolution was linked with what?

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07Why was gravity necessary for stability of Earth's atmosphere?

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08What was one reason for early Earth remaining hot for a long time?

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09What does the giant impact idea related to Moon formation suggest?

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10When did permanent oceans become possible on early Earth?

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11Why are atmosphere hydrosphere and lithosphere studied together in Earth's evolution?

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12Development of the biosphere indicates what?

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13Why is understanding chronology important in Earth's evolution?

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14What was the broadest change from early Earth to modern Earth?

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15Why did volcanoes remain active even after a solid crust formed on the early surface?

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16What does the direction from simple to complex forms show in life evolution?

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17Due to low free oxygen on early Earth which life was more possible first?

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18What did oxygen accumulation in the atmosphere change in Earth's evolution?

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19Before modern times what was the main source of atmospheric development on Earth?

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20Formation of oceans is directly linked with development of which sphere of Earth?

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21What was the main medium by which water vapour came from atmosphere to surface on early Earth?

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22Which is the correct broad sequence of natural systems in Earth's evolution?

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23What study became possible due to the formation of rocks in Earth's evolution?

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