Question 1

The time of the early universe that produced more gravity from radiation than from dark matter is called:&#10;A) Radiation era&#10;B) Inflation era&#10;C) Planck era&#10;D) Particle era

Accepted Answer

The Radiation era is the period in the early universe when radiation (photons and neutrinos) dominated the energy density, exerting more gravitational influence than matter, including dark matter. This era followed the Planck era and preceded the matter-dominated era.

Question 2

Unification theories are called ______.&#10;A) SUTs&#10;B) SSCs&#10;C) CMBs&#10;D) GUTs

Accepted Answer

Unification theories, particularly in the context of physics, are often referred to as Grand Unified Theories, abbreviated as GUTs. These theories attempt to unify the fundamental forces of nature into a single theoretical framework.

Question 3

The initial curved universe expanded and then _____.&#10;A) flattened&#10;B) curved more&#10;C) spiraled&#10;D) negative curved

Accepted Answer

The initial curved universe expanded and then flattened due to the effects of inflation and the distribution of mass-energy, leading to a universe that appears flat on large scales according to current cosmological observations and theories.

Question 4

What is the inflationary time of the universe?&#10;A) The time when radiation dominated the universe.&#10;B) The expansion of the universe from the Big Bang to the present.&#10;C) The time when stars began to form.&#10;D) The short time of very rapid expansion when the universe was very young.

Accepted Answer

The inflationary time of the universe refers to a brief period of very rapid expansion shortly after the Big Bang, when the universe was very young. This concept is crucial in cosmology for explaining the observed homogeneity and isotropy of the universe, as well as the distribution of large-scale structures.

Question 5

When the universe cooled and radiation lost energy, the universe entered the ______.

Accepted Answer

The answer of When the universe cooled and radiation lost...

Question 6

The anti particle to the electron is the _____.

Accepted Answer

The answer of The anti particle to the electron is...

Question 7

GUTs are designed to unify the forces of nature.

Accepted Answer

Grand Unified Theories (GUTs) aim to unify the electromagnetic, weak, and strong nuclear forces into a single force.

Question 8

The early universe underwent deflation.

Accepted Answer

The early universe underwent inflation, a rapid expansion of space, not deflation.

Deck 83: The Beginnings of the Universe