31 Questions
What is the name of the hypothesis proposed by Immanuel Kant and revised by Laplace in 1796?
Nebular Hypothesis
Who revised the Nebular Hypothesis in 1950, differing in details from Laplace's original idea?
Otto Schmidt and Carl Weizascar
In the context of the origin of the Earth, what were the solar nebula primarily composed of?
Hydrogen and Helium
What process led to the formation of a disk-shaped cloud around the sun according to the revised Nebular Hypothesis?
Friction and Collision of Particles
Which two scientists proposed a revision to the Nebular Hypothesis in 1950, introducing the idea of a solar nebula?
Otto Schmidt and Carl Weizascar
Which philosopher initially proposed the idea that planets were formed out of material associated with a youthful sun?
Immanuel Kant
What theory is considered the most popular regarding the origin of the universe?
Big Bang Theory
Who provided evidence that the universe is expanding?
Edwin Hubble
What event is believed to have taken place 13.7 billion years before the present?
Big Bang Event
What is the significance of the temperature dropping to 4,500 K within 300,000 years from the Big Bang event?
Becoming transparent
What concept considered the universe to be roughly the same at any point of time, as mentioned in the text?
Steady State Theory
What began to develop by accumulation of hydrogen gas in the form of a very large cloud called nebula?
Galaxies
What process gives rise to the formation of stars according to the text?
Accretion of clumps of gas
What is believed to have taken place some 5-6 billion years ago as mentioned in the text?
Formation of stars
What gave rise to differences in gravitational forces in the early universe?
"Initial Density" differences
"The galaxies spread over vast distances that are measured in thousands of light-years." What is measured in light-years?
"Distances between galaxies"
What process contributed to the saturation of oceans with oxygen?
Photosynthesis
When did oxygen begin to flood the atmosphere according to the text?
2,000 million years ago
What is the modern scientific view on the origin of life according to the passage?
A chemical reaction that generated complex organic molecules
Where is the record of life on Earth found according to the text?
In rocks as fossils
What structures related to blue algae have been found in ancient geological formations?
Microscopic structures
According to the Geological Time Scale, when did life presumably begin to evolve?
3,800 million years ago
What caused the separation of materials inside the earth during its primordial stage?
Increase in density
Which elements are considered to have contributed to the early atmosphere of Earth?
Hydrogen and Helium
What process led to the formation of oceans on Earth?
Degassing
At what point did life begin to evolve according to the text?
Around 3,800 million years ago
What played a role in modifying the composition of Earth's atmosphere according to the text?
Photosynthesis
Which layer is the densest inside the Earth?
Inner core
How did the separation of materials inside the Earth affect its evolution?
Caused differentiation into layers
What marked the first stage in the evolution of Earth's atmosphere?
Loss of primordial atmosphere
'Degassing' refers to which process mentioned in the text?
'Outpouring' of gases and water vapor from Earth's interior
Explore the fascinating world of stars and the universe in this quiz. Learn about the creation of stars, the vastness of the sky, and the mysteries of the universe's origins. Test your knowledge and delve into the wonders of space and celestial bodies.
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