The Big Bang

Approximately how many years ago did the Big Bang occur?

• 4.5 billion

• 10 billion

• 13.8 billion

• 20 billion

What is the term for the original state of the universe before expansion?

• Galaxy core

• Nebula

• Singularity

• Supernova

What happened during the "inflation" phase?

• Galaxies formed

• Universe cooled down

• Universe expanded rapidly

• Stars exploded

What type of particles existed in the universe immediately post-inflation?

• Atoms

• Neutrons

• Electrons and quarks

• Protons and deuterium

What major event followed the cooling of the universe?

• Formation of light

• Star explosion

• Earth formation

• Quarks became atoms

What elements were primarily formed after the Big Bang?

• Oxygen and nitrogen

• Carbon and neon

• Hydrogen and helium

• Iron and magnesium

What process allowed light to travel through the universe?

• Star ignition

• Formation of galaxies

• Recombination of electrons and protons

• Birth of black holes

What role does gravity play in the universe's structure?

• Slows down time

• Bends light only

• Forms galaxies and stars

• Dissolves matter

What is the current shape of the universe according to the theory?

• Static and flat

• Constant and infinite

• Expanding

• Cyclic

What is Cosmic Microwave Background (CMB)?

• Radiation from black holes

• Heat left over from the Big Bang

• Heat from the sun

• Radio signals from stars