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Formation of Planets Video Lecture | Geography Class 11 - Humanities/Arts

FAQs on Formation of Planets Video Lecture - Geography Class 11 - Humanities/Arts

1. How do planets form?

Ans. Planets form through a process called accretion, where dust and gas in a protoplanetary disk come together to form planetesimals. These planetesimals then collide and merge to form larger bodies, eventually leading to the formation of planets.

2. What is a protoplanetary disk?

Ans. A protoplanetary disk is a rotating disk of gas and dust that surrounds a newly formed star. It is the birthplace of planets, as the dust and gas in the disk come together to form planetesimals and eventually planets.

3. What are planetesimals?

Ans. Planetesimals are small, solid objects that form in a protoplanetary disk. They are the building blocks of planets and are typically several kilometers in size. Over time, planetesimals can collide and merge to form larger bodies, eventually leading to the formation of planets.

4. How long does it take for planets to form?

Ans. The time it takes for planets to form can vary depending on various factors such as the size of the protoplanetary disk and the distance from the central star. Generally, it takes millions to billions of years for planets to fully form.

5. Can planets form in any type of star system?

Ans. Planets can form in a variety of star systems, including those with single stars like our Sun and those with multiple stars. However, the specific conditions and processes involved in planet formation may differ depending on the type of star system.

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Sep 03, 2025 Last updated

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70 videos|324 docs|53 tests

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