Big Bang Theory Flashcards
What is the BBT?
is a COSMOLOGICAL model explaining how the UNIVERSE began. It suggests that the universe started its expansion about 13.8 billion years ago.
The idea of the BBT is similar to the? explain why!
bread-raisin model
bread- universe
raisins- galaxies
In the bread-raisin model, the galaxies, represented by the raisins, are EXPANDING.
FALSE. they are not.
Distances in relation to other galaxies just
increases because of the expanding universe.
The BBT states that as the universe expands, the density decreases.
TRUE
The big bang theory suggests that the universe started as a?
It is predicted to be in the core of a black hole with very high temperature and density.
SINGULARITY
The singularity constantly expands and cools.
TRUE!
In the BBT, matter dilutes as the universe expands.
TRUE
The rate of expansion is almost equal to the rate of cooling.
TRUE
What is nucleosynthesis?
This is the formation of elements, such as hydrogen and helium
The presence of the elements created during nucleosynthesis will lead to the formation of?
The STARS and GALAXIES!
The presence of the stars will lead to the formation of?
other cosmic bodies such as planets, comets, and asteroids.
Who are the proponents of the BBT? (4)
- Georges Henri Joseph Edouard Lemaitre
- Edward Hubble
- Arno Penzias and 4. Robert Wilson
What did Lemaitre contribute to the big bang?
HE IS THE FIRST PROPONENT
-suggested the idea of the expanding universe
Lemaitre explained that the universe originated in an
explosive act of ______ atom or the ‘Cosmic egg’
which was like a huge atomic nucleus.
PRIMEVAL
“Cosmic rays would be glimpses of the primeval fireworks of the formation of a star from an atom, coming to us after their long
journey through free space.”
Which proponent said this?
LEMAITRE
