Layers of the Earth's atmosphere
The lowest layer of the atmosphere
Troposphere
The state of the atmosphere with respect to wind, temperature, cloudiness, moisture, pressure, etc.
Weather
Any of several volatile, inert, saturated compounds of carbon, fluorine, chlorine, and hydrogen
CFC's
The zone separating two air masses, of which the cooler, denser mass is advancing and replacing the warmer.
Cold Front
A line drawn on a weather map or chart that connects points at which the barometric pressure is the same.
Isobar
The layer of the atmosphere above the troposphere
Stratosphere
The composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years.
Climate
Meteorological precipitation that is relatively acidic.
Acid precipation
A transition zone between a mass of warm air and the colder air it is replacing.
Warm Front
A line on a weather map or chart connecting points having equal temperature.
Isotherm
The layer of the atmosphere above the Stratosphere
Mesosphere
Moistness; dampness.
Humidity
A colorless, nonflammable, water-soluble, suffocating gas, SO2, formed when sulfur burns.
Sulfur Dioxides
A front between warm and cold air masses that is moving very slowly or not at all.
Stationary front
A tropical cyclone of the Atlantic Ocean, Caribbean Sea, Gulf of Mexico, or eastern Pacific Ocean, having sustained wind speeds of at least 64 knots
Hurricanes
The layer above the mesosphere
Thermosphere
Falling products of condensation in the atmosphere, as rain, snow, or hail; the amount of rain, snow, hail, etc., that has fallen at a given place within a given period,
Precipitation
A reddish-brown, highly poisonous gas, NO2, used as an intermediate in the manufacture of nitric and sulfuric acids, and as a nitrating and oxidizing agent; a major air pollutant from the exhaust of internal combustion engines that are not fitted with pollution control devices.
Nitrogen dioxides
A composite front formed when a cold front overtakes a warm front and forces it aloft.
Occluded Front
A large-scale, atmospheric wind-and-pressure system characterized by low pressure at its center and by circular wind motion, counterclockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere.
Cyclones
The last layer of the Earth's atmosphere
Exosphere
The mass per unit volume of Earth's atmosphere.
Air density
A scale that measures how acidic or basic a substance is.
pH scale
A boundary that separates a moist air mass from a dry air mass.
Dry line
First, the wind changes direction and wind speed increases.
• As the change in wind speed increases in altitude, a horizontal spinning starts at the lower atmosphere.
• Then, the air rises with the thunderstorms updrafts, causing the horizontal rotation to become vertical.
Tornado