Why Is the Cosmic Microwave Background (CMB)so Cold If the Early

question 39

Multiple Choice

Why is the cosmic microwave background (CMB) so cold if the early universe was so hot?

• A) Enough time has passed for matter to release enough heat to cool down.
• B) The CMB constantly interacts with atoms,which effectively cool down the photons.
• C) The expansion of the universe has redshifted those photons to an effectively cooler temperature.
• D) Misleading; The Big Bang was initially hot but the CMB was released from cold material much later on.

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Definitions:

Anchoring And Adjustment

Anchoring and adjustment is a cognitive bias in decision-making where an initial piece of information, the "anchor," heavily influences subsequent judgments and adjustments.

Creativity

The use of imagination or original ideas to create something; inventiveness.

Innovation

The creation and development of a new product or service.

Participation Error

The bias or error that can occur in research or decision-making processes when not all relevant parties are included or accurately represented.