[DOC] [TLE] Multiple Choice Exam Questions Chapter 1 [PAR] The most abundant gases in the earth's atmosphere by volume are: ... This holds 
a planet's atmosphere close to its surface: ... The rate at which temperature 
decreases with increasing altitude is known as the: ..... c. mix the air near the 
ground d. all of ... b. the sun is higher in the sky and we receive more direct solar 
radiation. [DOC] [TLE] Does air pollutionspecifically tiny atmospheric particles (aerosols ... [PAR] Air pollution occurs when the air contains gases, dust, smoke from fires, ... Light-
colored aerosol particles can reflect incoming energy from the sun in ... their 
surroundings by absorbing solar radiation before it reaches the ground. ... In 
contrast, atmospheric aerosol particles are largely localized near their ... How to 
Help. [DOC] [TLE] Bad Ozone - The Ozone Hole [PAR] At higher altitudes, where 90 percent of our planet's ozone resides, it does a ... 
gaseous shield in the stratosphere, the harmful radiation has a perfect portal ... 
Bad Ozone- In the Earth's lower atmosphere, near ground level, ozone is ... 
Ozone is a colorless gas found in the air we breathe. ... It is a major part of urban 
smog. [DOC] [TLE] Good Up High Bad Nearby - What is Ozone? [PAR] Here, ground-level or "bad" ozone is an air pollutant that is harmful to breathe ... 6 
to 30 miles and protects life on Earth from the sun's harmful ultraviolet (UV) rays. 
... Ozone depletion can cause increased amounts of UV radiation to reach the 
Earth ... and chemical solvents are some of the major sources of NOx and VOC. [DOC] [TLE] Smog - Wikipedia [PAR] Smog is a type of air pollutant. The word "smog" was coined in the early 20th 
century as a .... Ground-level ozone, sulfur dioxide, nitrogen dioxide and carbon 
monoxide ... The polluted air comes from neighboring country side located higher 
above ... The dense smog in Delhi during winter season results in major air and 
rail... [DOC] [TLE] CHAPTER 7 - STUDY GUIDE - Physical Geography [PAR] According to temperature change with altitude, seven different layers can be 
identified in ... As the solar radiation passes through the Earth's atmosphere the 
processes of scattering, ... Winds near the Earth's surface are called friction layer 
winds. ... At approximately 30 degrees North and South latitude, the subtropical 
high... [DOC] [TLE] Ozone: Good Up High, Bad Nearby - Policy Almanac [PAR] Here, ground-level or "bad" ozone is an air pollutant that damages human health, 
... 10 to 30 miles and protects life on earth from the sun's harmful ultraviolet rays (
UV-b). Earth-Factories, Cars, Chemicals, Radiation make Smog, Troposphere-10 
Miles ... High altitude ozone depletion is suspected to cause decreases in... [DOC] [TLE] troposphere [PAR] Water vapor plays a major role in regulating air temperature because it absorbs 
solar energy and thermal radiation from the planet's surface. ... gas which traps 
some of the Earth's heat close to the surface and prevents its release into space. 
... The uneven heating of the regions of the troposphere by the sun ( the sun 
warms... [DOC] [TLE] Ozone Facts - AirNow [PAR] The sun gives off light, heat, and other types of radiation. ... or takes in, some of 
the sun's harmful UV rays before they reach the ground. Just as sunscreen helps 
protect your skin from getting burned, ozone up high works like Earth's sunscreen
. ... And the only way to do that is to stop using ozone-depleting chemicals. [DOC] [TLE] ATMOSPHERE [PAR] a. percentage varies with seasons, altitude of particular mass of air, and ... c. 
helps prevent heat loss from Earth ... Structure of the Atmosphere (divided into 
layers according to major changes in ... a. clouds, dust, and gas molecules affect 
path of radiation from sun ... a) average temperature higher near equator than 
poles. [DOC] [TLE] What is ozone - Sesli Szlk [PAR] There is a layer of ozone high above the earth's surface. ... sharp smell

Question: Near the ground, this gas is a major part of smog; at higher altitudes, it helps block radiation from the sun
Answer: ozone