Big Bang Theory

What is the Big Bang Theory?

• The idea that the Universe has always existed in its current state

• The theory that the Universe began from a single, extremely hot and dense point and has been expanding ever since

• The belief that the Universe was created by multiple explosions

• The concept that the Universe is shrinking over time

What is the Cosmic Microwave Background (CMB)?

• A type of star found in the early Universe

• The leftover thermal radiation from the Big Bang

• The light from the first galaxies

• The sound waves from black holes

Which scientist is most closely associated with the discovery of the Universe's expansion?

• Isaac Newton

• Edwin Hubble

• Albert Einstein

• Stephen Hawking

What does the redshift of galaxies indicate?

• Galaxies are getting colder

• Galaxies are moving away from us

• Galaxies are getting brighter

• Galaxies are shrinking

Which element was primarily formed during the first few minutes after the Big Bang?

• Iron

• Hydrogen

• Carbon

• Uranium

What is the approximate age of the Universe according to the Big Bang Theory?

• 1 million years

• 13.8 billion years

• 100,000 years

• 4.5 billion years

Which observation supports the idea that the Universe is expanding?

• The presence of black holes

• The redshift of light from distant galaxies

• The existence of asteroids

• The rotation of the Earth

If a galaxy's light is blue-shifted, what does this tell us about its motion relative to Earth?

• It is moving away from Earth

• It is stationary

• It is moving towards Earth

• It is rotating

What would you expect to observe if the Universe were not expanding?

• No redshift in the light from distant galaxies

• The Cosmic Microwave Background would be brighter

• More black holes would form

• Stars would be closer together

• The speed of light

• The expansion rate of the Universe

• The mass of a galaxy

• The temperature of the CMB