Cosmology Unit Test Review

The universe is __________ years old.

• 13,700,000,000 (billion)

• 13,700,000 (million)

• 13,700

• 13

The universe is infinitely old and has no age.

• True

• False

select all that apply. The first elements created after the big bang were...

• Neon

• Hydrogen

• Helium

• Carbon

Red shift was first observed by which scientist?

• Albert Einstein

• Edwin Hubble

• Watson and Crick

• Neil Degrasse Tyson

What factor will determine the death of our universe?

• age of the universe

• the rate at which stars die

• Critical Density

• the age of our sun

Cosmic microwave radiation originated from what?

• 5G towers

• Other Galaxies

• Aliens

• The Big Bang

If you were to stand on star Wolf 359 and view the absorption lines on a spectrum for other galaxies, You would see.....

• that all galaxies are moving away from you

• that all galaxies are stationary

• that all galaxies are moving toward you

Big Bang nucleosynthesis says what?

• the nucleus of atoms were created before the big bang

• There is a lot of helium in the universe thanks to nuclear fusion in star cores

• Hydrogen can fuse into helium whenever it wants

• only heat from the big bang accounts for the amount of helium in the universe

Red-shift is/was..... (chose all that apply)

• Proof of universal expansion.

• Observed by Edwin Hubble.

• A measured shift of the motions of galaxies through space.

• The spectrum lines of a galaxy shift to redder wavelengths.

The universe was in a hot dense state....

• immediately after the big freeze

• when it came out of the cosmological oven

• immediately after the big bang

• whenever it wanted to be.