In Years of Heavy Snow Pack in the Mountains It

question 44

Multiple Choice

In years of heavy snow pack in the mountains it is sometimes desirable to induce early melting of the snow,rather than wait until it all melts suddenly and causes floods.It has been suggested that a way to accomplish this might be to have planes fly over the snow fields and sprinkle them with black soot.What do you think of this idea? Would it work?

• A)Yes,it would probably work because the black surface would be a better absorber of sunlight than would the white snow.
• B)Yes,it would work because the soot would raise the melting point of the snow.
• C)Yes,it would work because the soot would decrease the specific heat capacity of the snow.
• D)No,it would not work because it is infrared radiation and not visible radiation which melts the snow.
• E)No,it would not work because sunlight has very little effect on how fast the snow melts.

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Definitions:

REM Sleep

REM Sleep, or Rapid Eye Movement Sleep, is a unique phase of sleep characterized by random rapid movement of the eyes, vivid dreams, and increased brain activity.

Postural Muscles

Muscles primarily involved in stabilizing the body and maintaining posture.

Brain Activity

Refers to the various mental processes and physiological responses occurring within the brain, such as neuronal firing and synaptic activity.

EEG Record

A chart or digital record produced by an electroencephalograph, which measures electrical activity in the brain through electrodes placed on the scalp.