About _______ Percent of a Typical Night's Sleep Is Devoted

question 130

Multiple Choice

About _______ percent of a typical night's sleep is devoted to REM sleep, the stage at which dreams or nightmares are experienced.

• A) 10
• B) 20
• C) 30
• D) 40
• E) 50

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Definitions:

Wavelength

The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

Amplitude

The height of a wave from its baseline, indicating the strength or intensity of the wave.

Hue

A basic property of color, determined by the specific wavelength of light, perceived as the name of the color, such as blue, green, or red.

Binocular Cue

Visual information taken from both eyes that enables perception of depth, distance, and 3D structure of objects.