Big Bang Theory

What does the Big Bang Theory propose about the origin of the universe?

• The universe has always existed in its current state

• The universe began from a singularity and has been expanding ever since

• The universe was created in its current form by a sudden explosion of stars

• The universe is contracting and will eventually collapse

Approximately how old is the universe according to current Big Bang estimates?

• 4.6 billion years

• 10 billion years

• 13.8 billion years

• 20 billion years

What is the earliest phase of the universe called, occurring just after the Big Bang?

• Stellar Epoch

• Cosmic Dark Ages

• Planck Era

• Nucleosynthesis

What force was first to separate from the others after the Big Bang?

• Gravity

• Electromagnetic force

• Weak nuclear force

• Strong nuclear force

What is the term for the rapid expansion of the universe that occurred right after the Big Bang?

• Nucleosynthesis

• Cosmic Inflation

• Reionization

• Redshift

What process led to the formation of the first elements in the universe?

• Supernova explosions

• Stellar fusion

• Big Bang Nucleosynthesis

• Black hole formation

Which two elements were most abundant in the early universe?

• Carbon and Oxygen

• Hydrogen and Helium

• Iron and Nickel

• Neon and Lithium

Around how many minutes after the Big Bang did atomic nuclei begin to form?

• 1 second

• 3 minutes

• 1,000 years

• 1 million years

What is the Cosmic Microwave Background Radiation (CMBR)?

• Radiation left over from the Big Bang

• Light from the first stars

• Energy from quasars

• Heat from galaxies

Who were the two scientists who discovered the Cosmic Microwave Background Radiation?

• Edwin Hubble and Albert Einstein

• Arno Penzias and Robert Wilson

• Carl Sagan and Neil deGrasse Tyson

• Georges Lemaître and Alan Guth