Cosmology and Life in the Universe

study of the structure and evolution of the entire universe

• cosmetology

• astronomy

• cosmology

• star gazing

what is the word that means that the universe is the same in all directions?

• homogeneous

• isotropic

• heterotrophic

• heterogeneous

the diminishing brightness of a star is balanced by the increasing number of stars seen.

• Olber's paradox

• Hubble's law

• Hubble's theory

• Keebler law

Which doomsday scenario for our Universe predicts a cold dark death, as a consequence of the second law of thermodynamics?

• The big chill/The heat death

• The big crunch.

• The big bounce.

• The big bang.

Tags

NGSS.HS-PS3-4

Which doomsday hypothesis could be described as a reverse big bang, resulting in a hot dense end to our Universe?

• The big crunch.

• The big bang.

• The big chill.

• The big bounce.

Which of the following ideas make up the Big Bang Theory?

• The Universe is currently expanding.

• The Universe was once hot and dense.

• The Universe has a finite size.

• The Universe is unbounded.

Tags

NGSS.HS-ESS1-2

The Hubble constant (H_o) is...

• 70 km/s/Mpc

• 1240 eVnm

• 6.67x10^-11 m³/kgs²

• 9.8 m/s²

Tags

NGSS.HS-ESS1-2

The Hubble constant (H_o) is...

• the rate of expansion of the Universe.

• the strength of the gravitational force.

• the amount of dark matter in the galaxy.

• the strength of the electric force.

The mass-energy density of the Universe is...

• 70% dark energy; 29% matter/dark matter; <1% light.

• 70% dark energy; 29% light; <1% matter/dark matter.

• 100% dark energy

• 70% dark matter; 15% dark matter, 15% light.

Tags

NGSS.HS-ESS1-2

The critical mass-energy density is the mass-energy density required for a...

• flat universe.

• closed universe.

• open universe.