M1 Flashcards
The universe is going though a rapid expansion called inflation that has been going on and has never stopped expanding.
eternal inflation
The universe is not only uniform, but also unchanging in time, thus it is continuously created.
steady state universe
Process where two or more nuclei combines to form a new element which governs the
nucleosynthesis process
nuclear fusion
The universe is a crisscross of huge electric currents and gigantic magnetic fields.
plasma universe
Consists of a cyclic model because of the endless occurrences of explosions or big bang. This is followed by a contraction of the universe called “big crunches” in order for the cycle to repeat
oscillation universe
the universe was created by a supreme being.
creationism
is the creation of chemical elements by nuclear fusion reactions within stars.
the collective term for the nuclear reactions taking place in stars to build the nuclei of the heavy elements
stellar nucleosynthesis
is formed when a cloud of gas and dust
collapse to the point where the material in the
center of the clump is so dense and hot that
nuclear fusion of hydrogen nuclei and helium
nuclei occur
star
it refers to the period of big bang nucleosynthesis lasted only from about 10 seconds to about 20 minutes from the beginning of the universe itself
mechanism of the BBN
Describes how the universe began in a rapid expansion about 13.7 billion years ago
offers explanation to a broad range of phenomena including
the formation of light elements
big bang theory
The universe was created by a random fluctuation of a subatomic particle that exploded.
big bang theory
who published the paper entitled “The Origin of Chemical Elements”
Dr. Alpher, Bethe, and
Gamow
what are the 3 important nuclear fusion processes in stellar nucleosynthesis
- hydrogen burning
- helium burning
- burning of heavier elements
A branch of natural science that studies
non-living systems, in
contrast to life science
Physical science
described a process by which all of the elements in the universe could have come into existence shortly after the Big Bang
alpher-bethe-gamow paper
- Refers to the production of nuclei
- Believed to be responsible for the
formation of
o Hydrogen (H-1)
o Deuterium (H-2)
o Helium Isotopes
o Lithium Isotopes
big bang nucleosynthesis (bbn)
what happened after the big bang nucleosynthesis?
- universe expanded outwards and cooled
- decrease in temperature
- nuclear fusion becomes isolated
- w the decrease o temp, electrons were able to combine atomic nuclei to form neutral atoms
The branch of astronomy that involves the origin and evolution of the universe, from the formation to today and into the future.
Cosmology
what are the 6 origin of the universe?
- creationism
- big bang theory
- steady state universe
- eternal inflation
- oscillating universe
- plasma universe
- Approximately 14 billion years ago, nothing existed
- Black void of space
- All matter and energy compressed in a space about the size of a needle point
formation of the universe
It is believed to be responsible in the formation of hydrogen, deuterium, helium, lithium and trace of beryllium
big bang nucleosynthesis
Describes the formation of light elements shortly after the big ban
big bang nucleosynthesis
formation of heavy elements during stellar evolution. it is the collective term for nuclear reactions taking place in stars to build the nuclei of the heavy elements
stellar nucleosynthesis
what do stars consume
fuel
