The Drowsiness One Feels Immediately Before Sleep Would Be Characterized

question 181

Multiple Choice

The drowsiness one feels immediately before sleep would be characterized by somewhat larger and slower waves than when one is awake and alert. These slower waves are called __________ waves.

• A)alpha
• B)beta
• C)delta
• D)spindle

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Definitions:

Valley

A low area between hills or mountains, typically with a river or stream flowing through it.

Ridge

A long, narrow elevated landform often formed by the uplift of the surrounding area or by tectonic activities.

Plucking

A glacial process where rocks and other materials are pulled away from the earth and incorporated into the moving glacier, mainly due to the freezing of water into cracks.

Abrasion

The mechanical scraping of a rock surface by friction between rocks and moving particles during their transport by wind, glacier, waves, gravity, or running water.