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Questions and Answers
Which is the most widely accepted model to explain the formation and evolution of the solar system?
Terrestrial planets are composed of
Which scientist is associated with the Steady-State Theory?
Identify the dwarf planet.
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Which planet is also known as the 'morning star'?
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Which planets are classified as terrestrial planets?
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Which theory was propounded by George Lamaitre?
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Which planets are classified as Jovian planets?
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Study Notes
Solar System Formation
- The most widely accepted model to explain the formation and evolution of the solar system is the Nebular hypothesis.
- The Nebular hypothesis proposes that the planets were formed out of a cloud of material associated with a youthful sun, which was slowly rotating.
- The theory was developed by Immanuel Kant and later revised by Mathematician Laplace in 1796.
Terrestrial Planet Composition
- Terrestrial planets are composed of rocks and metals.
- The terrestrial planets in our solar system are Mercury, Venus, Earth, and Mars.
- They can be categorized into Silicate Planets, Iron Planets, Coreless Planets, and Carbon (diamond) Planets.
The Steady-State Model
- The Steady-State Model is a scientific concept that describes the structure of the universe.
- The theory states that the universe is constantly expanding with a fixed average density.
- It was put forward by Sir Hermann Bondi, Sir Fred Hoyle, and Sir Thomas Gold in 1948.
The Dwarf Planet
- A dwarf planet is a celestial body that is in orbit around the sun and has enough mass to be round in shape.
- The five officially recognized dwarf planets in our solar system are Ceres, Pluto, Makemake, Haumea, and Eris.
The "Morning Star"
- Venus is also known as the "Morning Star".
- It is the second planet from the sun.
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Description
Quiz about the formation and evolution of the solar system, including the most widely accepted model and its development.
