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Theories of Earth Origin

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Questions and Answers

What is the concept proposed by Hoyle as an alternative to the expansion of the universe?

Nebular Hypothesis

Steady State Theory (correct)

Big Bang Theory

Galaxy Formation Concept

What process is responsible for the formation of stars in a galaxy?

Cosmic Inflation

Gravitational Collapse of Dark Matter

Accretion of Planets

Accumulation and Condensation of Gas Clumps (correct)

What characteristic distinguishes the Terrestrial Planets from the Jovian Planets in our solar system?

Retention of gases due to intense solar winds (correct)

Formation in close vicinity of the sun

Formation from Dusty gaseous surface

Higher densities and smaller size

What is the final stage in the formation of planets according to the text?

Accretion of Small Planetesimals Signup and view all the answers

Where is our solar system located within the Milky Way Galaxy?

Edge of a Spiral Arm Signup and view all the answers

According to the Nebular Hypothesis, how were the planets formed?

From slowly rotating clouds of material associated with a youthful sun Signup and view all the answers

Who revised Immanuel Kant's Nebular Hypothesis in 1796?

Carl Weizascar Signup and view all the answers

According to the Planetesimal Hypothesis, how did planets form around the Sun?

A wandering star approached the Sun, separating a cigar-shaped extension of material Signup and view all the answers

Who formulated the Big Bang Theory or Expanding Universe Hypothesis?

Georges Lemaitre Signup and view all the answers

What key event took place according to the Big Bang Theory?

'Tiny ball' exploding and later universe expansion Signup and view all the answers