Welcome to the Quiz!
This quiz contains 14 questions from a mix of 1 subtopics.
According to the Big Bang theory, what was the state of the universe at time zero (t = 0)?
cold and sparse
similar to its current state
non-existent
incredibly hot and dense
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What is the term for the brief period of rapid expansion that occurred immediately after the Big Bang?
spacetime expansion
cosmic microwave background radiation
cosmic inflation
the Great Attractor
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What does the cosmological principle propose about the universe on a large scale?
it is isotropic
all of the above
it is homogeneous
it appears similar in all directions
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What is the approximate temperature of the CMBR across the sky?
2.7 K
3.7 K
1.7 K
0 K
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What do the minuscule temperature variations within the CMBR correspond to?
density fluctuations in the early universe
the expansion rate of the universe
the composition of the universe
the age of the universe
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What type of spectrum does the CMBR exhibit?
an absorption line spectrum
A perfect black body spectrum
an emission line spectrum
A continuous spectrum
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What does the Doppler shift of the CMBR indicate about the Milky Way's motion?
it is stationary
it is moving rapidly towards the Great Attractor
it is moving rapidly away from the Great Attractor
it is orbiting the Great Attractor
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What facilitated the gravitational collapse that led to the formation of galaxies?
the expansion of the universe
the discovery of the CMBR
the cooling of the universe
density fluctuations in the early universe
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What is the concept that combines the three dimensions of space with the dimension of time into a single four-dimensional continuum?
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What type of radiation is the CMBR?
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What does the CMBR provide compelling evidence for?
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Explain how observations from astronomy support the Big Bang theory.
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What are the key characteristics of the universe at the moment of the Big Bang, according to the theory?
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How do the tiny temperature fluctuations in the CMBR relate to the formation of galaxies?
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