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A towering cloud (or cluster of clouds) accompanied by thunder, lightning, and strong gusty winds.
The gas that shows the most variation from place to place and from time to time in the lower atmosphere is _____ _____.
What percent does each of the following gasses occupy in a volume of air near the earth's surface?
nitrogen= 78%, oxygen = 21% water vapor = 0 to 4%, carbon dioxide = 0.037%
Most of the ozone in the atmosphere is found in the atmospheric layer called the _____.
The only substance near the earth's surface that is found naturally in the atmosphere as a solid, a liquid, and a gas is ______.
The instrument that measures temperature, pressure, and humidity at levels above the earth's surface is the_____.
The primary source of oxygen for the earth's atmosphere during the past half billion years of so appears to be:
The largest storm in our atmosphere, in terms of actual size (diameter) is the
middle latitude cyclonic storm
In the Northern Hemisphere, surface winds tend to blow this way around an area of surface low pressure.
counterclockwise and inward
The air temperature at the tropopause is warmer than the average air temperature measured at the earth's surface.
About half of all the molecules in our atmosphere are below an altitude of about 5.5 kilometers of 18,000 feet.
In the Northern Hemisphere, surface winds tend to blow clockwise and outward around an area of high pressure.
The atmosphere is compressible. This means that air pressure decreases at a constant rate from the surface to the top of the atmosphere.
In the middle latitudes a pressure of 500 millibars would normally be found at an altitude near 5500 meters or about 18,000 feet.
In the upper atmosphere, the mean free path of atoms and molecules decreases with increasing altitude.
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