What Is the Cosmic Microwave Background Radiation

question 74

Multiple Choice

What is the cosmic microwave background radiation?

• A) An almost-uniform background radiation from distant,unresolved,overlapping galaxies
• B) Radiation left over from the Big Bang,after the universe expanded and cooled
• C) A uniform background of radiation from electrons spiraling in weak intergalactic magnetic fields
• D) Radiation from a very tenuous,ionized gas that fills the universe equally in all directions

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Definitions:

Skeletal Systems

The framework of bones and other connective tissues that provide support, movement, and protection for the human body.

S-shaped Segment

A segment of a structure, such as the colon, that curves twice in opposite directions resembling an "S".

Descending Colon

The segment of the large intestine after the transverse colon that descends the left side of the abdominal cavity.

Rectum

The final section of the large intestine, ending at the anus, where feces are stored before they are excreted.