The Big Bang and the Beginning of the Universe

What theory became widely accepted in science after the discovery of cosmic background radiation?

• Steady State Theory

• Big Bang Theory

• String Theory

• Multiverse Theory

What did Edwin Hubble discover about galaxies that supported the Big Bang theory?

• Galaxies are merging together

• Galaxies are moving apart from each other

• Galaxies are stationary

• Galaxies are moving closer to each other

What is the temperature of the universe when quarks begin forming new particles, hadrons?

• 10 billion degrees Celsius

• 1 billion degrees Celsius

• 1 million degrees Celsius

• 100 degrees Celsius

What is the first atom that formed in the universe?

• Helium

• Oxygen

• Carbon

• Hydrogen

What did the radiation from stars and galaxies do to the stable hydrogen gas in the early universe?

• Dissolved it into a plasma

• Turned it into a liquid

• Turned it into a solid

• Caused it to explode

What is the main unanswered question about the beginning of the universe?

• Were there universes before our own?

• Is the universe infinite?

• Is the universe contracting?

• What is the size of the universe?

What is the temperature of the universe when atoms formed out of hadrons and electrons?

• 100 degrees Celsius

• 1 million degrees Celsius

• 1 billion degrees Celsius

• 10 billion degrees Celsius

The theory of the origin of the universe that is most popular among space scientists suggests that our universe originated how long ago?

• 10 – 20 centuries ago

• 10 – 20 thousand years ago

• 10 – 20 million years ago

• 10 – 20 billion years ago

Space and all the matter & energy in it

• Space

• Universe

• Earth

• Milky Way

The universe is expanding!  This means that:

• all of the galaxies are spreading out.
• the universe must have started from a single point.
• the universe is cooling down.
• all of the above.