Big Bang 1
This theory, most scientist believe, explains how our universe began is called ________________.
What is the Big Bang Theory
In the beginning of time the Universe was this
What is smaller and hotter
A date that is commonly accepted by Big Bang theorists for the Big Bang is ____ years ago
What is 13.7-13.8 billion years old
This theory was the natural beginning of a Big Bang theory
What is the general belief in a static, unchanging, and infinite universe.
Elements heavier than lithium were created here
What is primarily created during supernova explosions and neutron star collisions through rapid neutron-capture processes (r-process).
Between 1912 and 1922, astronomer Vesto Sliphe Arizona discovered this
What is redshifted?
Hubble and his assistant discovered this about galaxies
What is that the universe was expanding.
True or False, the universe has a center?
What is False. The Big Bang was not an explosion but a moment when the entire Universe had ultra-high density.
He showed that the universe was indeed expanding
What is who is Edwin Hubble
CBM stands for
Cosmic Microwave Background Radiation
Lemaitres propose the universe was doing
What is he universe is expanding
By look By observing more distant objects, scientists can do this
What is look further back toward a time when both galaxies and the universe were young
Which weighs more, a ton of concrete or a ton of feathers?
What is they both weigh the same
This is the natural process of creating new atomic nuclei from existing nucleons (protons and neutrons) and simpler nuclei
What is nucleosynthesis
They predicted the existence of CMB
What are Ralph Apher Robert Herman and George Gamow
(True/False) Big Bang theorists believe that most matter should be complex, large atoms, like gold and plutonium.
False
The remaining energy (radiation) from the big bang is called ________.
CMB -Cosmic Microwave Background
Redshift, Cosmic Microwave Background (CMB) radiation, a faint glow of heat from the early universe, and the abundance of light elements like hydrogen and helium.
What are the 3 main pieces of evidence that support The Big Bang Theory
Big Bang Nucleosynthesis (BBN) is
What is the process that occurred a few minutes after the Big Bang when the universe was hot and dense enough for protons and neutrons to fuse and form the nuclei of the lightest elements, namely hydrogen, helium, and lithium
The cosmic microwave background (CMB) was accidentally discovered by
Who are Arno Penzias and Robert Wilson
(True/False) The Big Bang Theory is the most widely accepted theory about the origin of the universe
True
In 1963, astronomer Maarten Schmidt discovered the first
What is the first quasar (quasi-stellar radio source), an extremely luminous and distant object.
Einstein introduced the cosmological constant (Λ) to
What is counteract the gravitational collapse predicted by the initial equations, which were unsuitable for a static universe
How much of the universe’s ordinary matter is thought to be helium
What is about 25% of the ordinary matter in the universe is thought to be helium by mass, with hydrogen making up the other approximately 75%.
About 400,000 years after the Big Bang, the event this thought to have occured
What is recombination occurred, where the universe cooled enough for electrons and protons to combine, forming the first neutral atoms (mostly hydrogen)
The three major problems with the Big Bang Theory
What are the Flatness Problem, the Horizon Problem, and the Monopole Problem
The current theories on the end of the universe
What is the universe could end in a "Big Freeze" (heat death), where expansion leads to ultimate cold and darkness, a "Big Rip," where accelerating expansion tears everything apart, or a "Big Crunch," where gravity reverses expansion and collapses everything back into a singularity
A heat death, The Big Crunch, The Big Rip, and vacuum decay
What are the 4 theories of the end of the universe
About 10-43 seconds after The Big Bang this occured
What is brings Space, Time, all the Matter and Energy into to exisence
The inflation theory
What is propose that the early universe underwent a period of extremely rapid, exponential expansion in the first fraction of a second after the Big Bang