The Degree of "Flatness" of the Universe,which Determines Whether We

question 82

Multiple Choice

The degree of "flatness" of the universe,which determines whether we live in an open or a closed universe,has been determined recently by measuring the

• A) average density of matter compared to the average density of radiation energy.
• B) typical size of the "hot spots" in the structure of the cosmic microwave background.
• C) hemispheric asymmetry in the temperature of the cosmic microwave background radiation.
• D) extent of the bending of light from distant galaxies,the so-called "lensing."

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Definitions:

Fine Motor Skill

The ability to use small muscle groups for precise movements, such as writing or manipulating small objects.

Perform A Somersault

The act of moving the body so it goes head over heels in a complete over-the-head flip, usually landing back on the feet.

Dodge A Ball

A physical activity or game where players try to avoid being hit by a ball thrown by opponents.

Feet Tall

A unit of measurement used to describe the height of an individual or object, equating to 12 inches.