The Cosmic Microwave Background Is Found to Be Extremely Uniform

question 147

Multiple Choice

The cosmic microwave background is found to be extremely uniform throughout space, with only very small fluctuations in intensity. The event that produced this remarkable smoothness in the early universe was

• A) the occurrence of the Big Bang everywhere in space at the same time.
• B) the start of the production of matter in the universe, which smoothed out the irregularities in space.
• C) an exemplar of Heisenberg's uncertainty principle, which prevented the concentration of radiant energy in localized volumes of space.
• D) a sudden but brief period of rapid expansion (cosmic inflation) of the universe during the general expansion of the early universe.

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Definitions:

Proximity

In psychology, it refers to the physical or psychological closeness or nearness between people, objects, or ideas.

Top-Down Processing

A cognitive process that starts with the higher-level brain functions to interpret sensory information, based on knowledge, expectations, and context.

Bottom-Up Processing

A type of information processing based on incoming data from the environment to form a perception, starting from the most basic level of sensory input.

Feature Analysis

A cognitive process by which the brain breaks down visual stimuli into individual features to understand and recognize objects.