Origin of Universe and Stellar Nucleosynthesis

What is the widely accepted explanation for the origin of the universe?

• Creation myths

• The Grand Unification Epoch

• The Big Bang theory

• The Electroweak Epoch

Answer explanation

The widely accepted explanation for the origin of the universe is The Big Bang theory. It proposes that the universe began as a singularity and has been expanding ever since.

According to the Big Bang theory, how wide was the initial point from which the universe began?

• A few millimeters

• Infinitely large

• Similar to a supercharged black hole

• The size of a grapefruit

What is the first epoch mentioned in the radiation era?

• Planck epoch

• Inflationary epoch

• Quark epoch

• .Electroweak epoch

What event occurred at the end of the Planck epoch?

• Formation of protons and neutrons

• Rapid expansion of the universe

• Splitting of gravity from the superforce

• Fusion of protons and neutrons

During which epoch did the universe rapidly expand, growing from the size of an atom to the size of a grapefruit?

• Inflationary epoch

• Electroweak epoch

• Quark epoch

• Hadron epoch

What marked the end of the grand unification epoch?

• Formation of protons and neutrons

• Splitting of the strong nuclear force

• Rapid expansion of the universe

• Fusion of protons and neutrons

In which epoch did the last two forces, electromagnetic and weak, finally split off?

• Electroweak epoch

• Quark epoch

• Hadron epoch

• Lepton epoch

1. What occurred during the quark epoch?

• 1. a. Formation of protons and neutrons

• 1. b. Rapid expansion of the universe

• 1. c. Subatomic particles formed

• 1. d. Splitting of electromagnetic and weak forces

What epoch marked the cooling down of the universe, allowing quarks to bind together and form protons and neutrons?

• Inflationary epoch

• Quark epoch

• Hadron epoch

• Lepton epoch

During which epochs did protons and neutrons undergo a significant change, creating the first chemical element in the universe?

• Quark and Hadron epochs

• Lepton and Nuclear epochs

• Atomic and Galactic epochs

• Stellar and Matter epochs