WX 201 CERTIFICATION EVALUATION FULL QUESTIONS WITH COMPLETE SOLUTION

WX 201 CERTIFICATION EVALUATION
FULL QUESTIONS WITH COMPLETE
SOLUTION

●● Wind direction
Answer: the direction from which the wind is blowing


●● a variable gas in the Earth's atmosphere is
Answer: water vapor


●● Troposhere
Answer: The atmosphere layer closest to Earths surface in which we live


●● Air molecules are held near the earth's surface by ____.
Answer: Gravity


●● The Temperature of the tropopause is much _____ than the
temperature at Earth's surface
Answer: colder


●● At night, when the weather is extremely cold and dry,
Answer: atmospheric pressure decreases with increasing altitude

, ●● The only substance near Earth's surface that is found naturally in the
current atmosphere as a solid, liquid, and a gas is
Answer: Water


●● Typically, water vapor occupies about what percentage of the air's
volume near the earth's surface?
Answer: Less than 4%


●● In a volume of air near the earth's surface, ____ occupies 78 percent
and ____ nearly 21 percent.
Answer: Nitrogen; Oxygen


●● The gas that absorbs most of the harmful ultraviolet radiation in the
stratosphere is:
Answer: ozone


●● Almost all of the earth's weather occurs in the:
Answer: Troposphere


●● The weather element that ALWAYS decreases as we climb upward
into the atmosphere is:
Answer: Pressure