Cosmic Evolution and Epochs

What is the most widely accepted explanation for the universe's origin?

• Creation myths

• Big Bang Theory

• Stellar Evolution

• Galactic Formation

What was the universe like at the very beginning, according to the Big Bang Theory?

• A cold, empty void

• A vast, expanding nebula

• A hot and infinitely dense point

• A collection of fully formed galaxies

Approximately how long ago did the Big Bang occur?

• 4.5 billion years ago

• 100 million years ago

• 13.7 billion years ago

• 1 million years ago

What fundamental aspects of existence were created from the Big Bang's explosion?

• Only matter and energy

• Only space and time

• Matter, energy, space, and time

• Planets and stars

What are the two major stages of the universe's evolution after the Big Bang?

• Atomic and Stellar Eras

• Radiation and Matter Eras

• Galactic and Planetary Eras

• Quantum and Classical Eras

What is the Radiation Era named for?

• The dominance of matter

• The dominance of radiation

• The formation of stars

• The expansion of space

What existed in the universe during the Planck Epoch?

• Only matter

• Only energy and the superforce

• Fully formed atoms

• Quarks and electrons

Which force of nature split away from the Grand Unified Theory during the Grand Unification Epoch?

• Gravity

• Electromagnetic

• Weak Nuclear

• Strong Nuclear

During the Inflationary Epoch, how much did the universe rapidly expand?

• From the size of a proton to a marble

• From the size of an atom to a grapefruit

• From a grain of sand to a planet

• From a small star to a galaxy

What formed when the universe cooled down enough during the Hadron Epoch?

• Electrons and positrons

• Quarks and antiquarks

• Protons and neutrons

• Atoms and molecules