What is a singularity?

• An area of infinite heat & infinite gravity

• An area of hydrogen & helium atoms

• An area where stars a formed

• An area where galaxies are expanding

Which is NOT a piece of evidence for the Big Bang Theory?

• The high concentration of light elements in the Universe

• Cosmic Microwave Background Radiation

• Observed blueshift from distant galaxies

• Dark Matter and Dark Energy

What are the "light elements"?

• Hydrogen & Helium

• Oxygen & Nitrogen

• Uranium & Plutonium

• Carbon & Phosphorous

How does the Doppler effect work?

• Sound waves compress as they move towards you & lengthen as they move away

• Sound waves lengthen as they move towards you & compress as they move away

• Sound waves get lower pitched as they move towards you

• Sound waves get higher pitched as they move away from you

Stars moving away from the Earth...

• Display light shifted towards the red end of the spectrum

• Display light shifted towards the blue end of the spectrum

• Display light of shorter wavelengths

• Generally have a larger magnitude

Dark energy and Dark matter...

• Only exist in black holes

• Are visible with telescopes

• Make up most of the Universe

• Prove that the Universe is contracting

Which of the following is the most likely scenario for the end of the Universe?

• The Big Crunch Hypothesis

• The Big Rip Hypothesis

• The Big Bounce Hypothesis

• The Heat Death Hypothesis

The Big Bang...

• Was an explosion of matter into the Universe

• Describes the formation of a singularity

• Describes the expansion of the Universe

• Is just a theory without scientific evidence

How old is the Universe

• 20,000 years

• 4.5 billion years

• 13.7 billion years

• 12.5 million years

A light year measures...

• Distance

• Speed

• Time

• Gravity