The document discusses the composition and structure of the Earth's atmosphere. It notes that the atmosphere is composed primarily of nitrogen, oxygen, and trace amounts of other gases, as well as varying amounts of water vapor and dust particles. It then describes the different layers of the atmosphere - the troposphere, stratosphere, mesosphere, and thermosphere - and how temperature varies with altitude through each layer. Finally, it discusses several atmospheric phenomena including air pollution, acid rain, the greenhouse effect, global warming, and ozone depletion.

2. OUR ATMOSPHERE
THE ENVELOPE THAT
SURROUNDS THE EARTH IS
KNOWN AS ATMOSPHERE

3. COMPOSITION OF THE
ATMOSPHERE
 OTHER THAN THE GASES,WATER
VAPOUR AND DUST PARTICLES ARE
ALSO FOUND IN THE LOWER
PORTIONS OF THE
ATMOSPHERE.DEPENDING ON THE
LOCATION AND SEASON THERE ARE
SOME CHANGES IN THE AMONT OF
WATER VAPOUR AND DUST PARTICLES
PRESENT IN THE ATMOSPHERE.

4. ATMOSPHERE AND TEMPERATURE
 THE EARTH RECEIVES ENERGY FROM THE
SUN.THE RADIATION COMING FROM THE SUN
IS CALLED IN SOLATION.
 THE EARTH ABSORBS THE SOLAR ENERY DUE
TO THIS,THE EARTH’S SURFACE GETS HEATED.
 THE EARTH THUS HEATED,EMITS OUT THE
HEAT AS LONG WAVE RADIATION.THIS IS
CALLED TERRESTRIAL RADIATION.
 THROUGH THE PROCESSESS LIKE
CONDUCTION, CONVECTION,ADVECTION,
RADIATION THE ATMOSPHERE GETS HEATED
UP.

5. HOW DO YOU MEASURE
ATMOSPHERIC TEMPERATURE
 THE THERMOMETER DISPLY.THE
TEMPERATURE IN UNIT DEGREE
CELCIUS.AND DEGREE FAREHN HEAT.
 THE DIFFERENCE BETWEEN THE
MAXIMUM TEMPERATURE AND THE
MINIMUM TEMPERATURE IN ADAY IS
CALLED THE ORIGINAL RANGE OF
TEMPERATURE.

6. DISTRIBUTION OF TEMPERATURE
ON THE EARTH’S SURFACE
a. LATITUDE
AT THE EQUATOR,WHERE THE SUNS RAYS
FALL VERTICALLY ON THE EARTH, THE
TEMPERATURE WILL BE MORE.
b. NEARNESS TO THE SEA
TWO PLACES ON THE SAME LATITUDE,ONE
CLOSE TO THE SEA AND THE OTHER FAR
FROM THE SEA WILL NOT HAVE THE SAME
TEMPERATURE.

7. c. OCEAN CURRENTS
OCEAN CURRENTS INFLUENCE THE
TEMPERATURE OF THE COASTAL REGIONS.
d. WINDS
LIKE THE OCEAN CURRENTS,THE WINDS
ALSO INFLUENCE THE TEMPERATURE OF A
PLACE

8. STRUCTURE OF THE
ATMOSPHERE
TROPOSPHERE
 THE ATMOSPHERIC LAYER CLOSE TO THE
EARTH SURFACE IS TROPOSPHERE.
 ACCORDING TO THE LATITUDE AND
SEASONS,THE HEIGHT OF THE TROPOSPHERE
VARIES.
 AT POLES,IT IS ABOUT 8KILOMETRES AND AT
THE EQUATOR,IT IS ABOUT 17 KILOMETRES

9. STRATOSPHERE
 IN THE LOWER PART OF STRATOSPHERE,THE
TEMPERATURE IS CONSTANT.
 THE ULTRAVIOLET RAYS OF THE SUN ABSORB
THE OXYGEN MOLECULES AND SPLIT THEM
INTO OXYGEN ATOMS WHICH AID THE
FORMATION OF OZONE IN THIS PART OF THE
ATMOSPHERE.
 THE OZONE THAT IS PRODUCED IN THIS
LAYER IS KNOWN AS THE OZONE LAYER
WHICH PROTECTS THE EARTH.

10. MESOSPHERE
 THEATMOSPHERIC LAYER THAT EXTENDS
FROM 50 K.M TO 80 K.M ABOVE THE SEA
LEVEL IS MESOSPHERE.
 AS THE HEIGHT INCREASES, THE
TEMPERATURE IN THE MESOSPHERE
DECREASES.
 IN THE UPPER PART OF THE
MESOSPHERE,THE TEMPERATURE
DECREASES FROM 83 DEGREE AND 100
DEGREE CELCIUS.

11. THERMOSPHERE
 THIS IS AN AREA WHERE THE
TEMPERATURE INCREASES ABRUPTLY.
 THE PART OF THE THERMOSPHERE;FROM
ABOUT 80 K.M TO 400 K.M,ABOVE THE
EARTH SURFACE IS CALLED IONOSPHERE.
 THE SHORT WAVES IN THE ELECTRO
MAGNETIC SPECTRUM,LIKE X-RAYS CAUSE
IONISATION.
 IONOSPHERE REFLECTS RADIO WAVES.

12. ATMOSPHERIC POLLUTION
IF THE PRESENCE OF ANY GAS
BECOMES A THREAT TO HEALTH
WHETHER IN HIEGHER OR
SMALLER AMOUNTS AND IF NEW
GASES ARE APPED TO THE
ATMOSPHERE,IT IS CALLED AIR
POLLUTION.

13. ACID RAIN
DUE TO THE ATMOSPHERIC
POLLUTION,A LOT OF
ACID.PARTICLES GET MIXED UP
WITH RAIN WATER AND FALLS AS
ACID RAIN.

14. GREEN HOUSE EFFECT
 THE GASES LIKE CARBON DIOXIDE AND
METHANE, AND WATER VAPOUR FOUND IN THE
ATMOSPHERE PLAY AN IMPORTANT ROLE IN
REGULATING THE TEMPERATURE.THESE ARE THE
GREEN HOUSE GASES.
 THE GLASS HOUSE USED IN COLD REGIONS TO
GROW PLANTS ARE KNOW AS GREEN HOUSE.
 THE ATMOSPHERE WITH THE HELP OF GREEN
HOUSE GASES RETAIN.THE TEMPERATURE,IT AS
CALLED THE GREEN HOUSE EFFECT.

15. GLOBAL WARMING
THE INCREASE IN THE AVERAGE
TEMPERATURE IN THE
ATMOSPHERE NEAR THE
SURFACE OF THE EARTH IS
GLOBAL WARMING.

16. OZON DEPLETION
 COMPARATIVELY,VERY LITTLE AMOUNT OF
OZONE IS PRESENT IN THE ATMOSPHERE.
 THIS REGION WHERE OZONE IS PRESENT IS
CALLED THE OZONE UMBRELLA OR OZONE
LAYER.
 THIS OZONE LAYER FILTERS THE
DANGEROUS ULTRAVIOLET RAYS OF THE
SUN AND PREVENTS THEM FROM
REACHING THE EARTH.