The Daytime Sky Is Blue, on Sunny Days, Because the Atmosphere

question 37

Multiple Choice

The daytime sky is blue, on sunny days, because the atmosphere

• A) is most efficient at scattering red light.
• B) absorbs blue light.
• C) contains small amounts of water vapor that give the air its blue color.
• D) is more efficient at scattering blue light.
• E) absorbs the red light.

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Definitions:

Alternate Forms Reliability

The extent to which two versions of a test are consistent in their measurements across the same group of individuals.

Test-Retest Reliability

The consistency of an individual's score on the same test administered at two different times.

Validity

The extent to which a test, tool, or method accurately measures what it is intended to measure.

Parallel Forms Reliability

A measure of reliability used to assess the consistency of the results of two tests constructed in the same way from the same content domain.