Big Bang Theory Flashcards
to be able to answer the quiz (not clueless edition)
Big Bang Theory?
The big bang theory is the leading explanation how the universe began
astronomers explain how the universe began
What does the big bang theory explain?
About 14 billion years ago, the universe began with a massive explosion (Big Bang) of an extremely dense and very small point.
It was the First?
It was first proposed as a physical theory in 1931 by Roman Catholic priest and physicist Georges Lemaître when he suggested the universe emerged from a “primeval atom”.
When did the Big Bang Theory Occur?
13.8 billion years ago
Evidence to support the Big Bang Theory?
the measured abundances of elements, the observed expansion of space, and the discovery of the cosmic microwave background (CMB).
universe is expanding
phenomenon or cosmic acceleration
What is cosmic inflation, and how does it relate to the early universe?
the early Universe expanded exponentially fast for a fraction of a second after the Big Bang. Cosmologists introduced this idea in 1981 to solve several important problems in cosmology.
What is the CMB, and how does it provide evidence for the Big Bang?
The Cosmic Microwave Background (CMB) is the cooled remnant of the first light that could ever travel freely throughout the Universe.
What information does the CMBR give us about the early universe?
The CMB provides the best data we have on the early universe, and the structure of the cosmos on the largest scales.
produced the first light
nuclear reactions
What role did nucleosynthesis play in the early universe?
creation of new atomic nuclei
What were the key epochs in the early universe
The eight epochs of the Radiation Era are the Planck, Grand Unified, Inflationary, Electroweak, Quark, Hadron, Lepton, and Nuclear Epochs.
creator of big bang theory
Georges Lemaître, (1894-1966), Belgian cosmologist, Catholic priest, and father of the Big Bang theory.
what law supports the big bang theory?
Hubble’s Law
asically states that the greater the distance of a galaxy from ours, the faster it recedes.
