The Cosmic Background Radiation Comes from a Particular Time After

question 43

Multiple Choice

The cosmic background radiation comes from a particular time after the origin of the universe. What was that time?

• A) when protons and neutrons were first formed
• B) when the big bang first began to expand
• C) when gamma rays had enough energy to destroy nuclei
• D) when electrons began to recombine with nuclei to form atoms

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Definitions:

Stereoscopic Vision

The ability to perceive depth and three-dimensional structure from visual information derived from two eyes positioned slightly apart.

Arboreal Environment

A habitat characterized by the presence of trees where many organisms live among the branches and foliage.

Mismatched

Refers to components, items, or elements that do not properly align, fit, or correspond with one another.

Anthropoid

A member of a suborder of primates that includes monkeys, apes, and humans.