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Subjects

Geography

Star formation, formation of planets, and our solar system

In this Class 11 Geography topic from “The Origin and Evolution of the Earth,” students explore how stars form from vast clouds of gas and dust and how planets emerge from the material surrounding a young star. They examine the formation and organisation of the solar system, including the Sun, planets, satellites, asteroids and comets, while connecting these processes with Earth’s place, structure and early development within the wider universe.

Medium · Level 6 · 25 questions

Practice questions

01Which clue is most useful to distinguish a meteor from a meteorite?

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02Why are meteorites important for the history of the solar system?

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03When did differentiation become possible in early Earth?

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04What conclusion follows from the abundance of iron and nickel in Earth's core?

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05What was the contribution of outgassing to Earth's early atmosphere?

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06Which balanced idea is more correct for the origin of Earth's water?

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07In the giant impact hypothesis the Moon is considered to have formed from what?

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08What is considered the long term effect of the Moon on Earth's axis?

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09What is the main basis of category difference between a dwarf planet and a major planet?

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10If a body revolves around the Sun and is nearly round but does not clear its orbit what can it be?

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11Why is Venus unfavorable for life despite being called Earth's twin?

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12Which is the correct combination in making Earth habitable?

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13What is the best physical reason for the Sun's central role in the solar system?

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14Which planetary feature gives the strongest clue supporting the nebular theory?

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15Planetary composition changing with distance from the Sun can be understood through which idea?

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16What relation is considered between comets water rich meteorites and Earth's development?

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17What is the combined reason for small inner planets and large outer planets?

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18Which is the correct group of causes for heating of early Earth?

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19How did planetary differentiation form Earth's layered structure?

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20Why are the origins of the Sun and planets considered parts of one process rather than separate events?

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21If a question calls inner planets terrestrial what would be the most suitable reason?

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22Which is the correct matching of gas giants and ice giants?

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23Which level order is correct for understanding the position of the solar system in the Milky Way?

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24What is the result of balance between planetary motion and the Sun's gravity?

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25Under which condition can planet formation stop and leave small leftovers?

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