4.2 Understanding the Universe: From Big Bang - Modern Cosmology

What is the field of science that specifically studies the origin and development of the universe?

• Astrobiology

• Cosmology

• Geology

• Quantum Mechanics

Who coined the term 'The Big Bang'?

• Stephen Hawking

• Fred Hoyle

• Isaac Newton

• Albert Einstein

What epoch is characterized by the unification of all fundamental forces?

• Hadron epoch

• Quark epoch

• Electroweak epoch

• Planck epoch

During which epoch did gravity separate from the other fundamental forces?

• Photon epoch

• Grand unification epoch

• Inflationary epoch

• Electroweak epoch

What significant event marks the inflationary epoch?

• Appearance of the first stars

• Unification of fundamental forces

• Expansion of the universe by 26 orders of magnitude

• Formation of the first atoms

What particles are primarily involved during the quark epoch?

• Protons and neutrons

• Quarks and gluons

• Electrons and positrons

• Photons and neutrinos

What is the primary outcome of the hadron epoch?

• Stabilization of leptons

• Formation of hadrons like protons and neutrons

• Cooling of the universe to form stars

• Separation of electromagnetic and weak nuclear forces

What marks the beginning of the photon epoch?

• The first galaxies form

• The universe becomes transparent

• Protons and neutrons fuse

• The Big Bang occurs

What process dominates the lepton epoch?

• Formation of the first molecules

• Fusion of hydrogen and helium

• Annihilation of hadrons

• Annihilation of leptons and anti-leptons

During the recombination era, what significant change occurs in the universe?

• The temperature rises significantly

• Electrons combine with nuclei to form neutral atoms

• The universe expands rapidly

• Dark matter begins to form