The document discusses the composition and structure of the atmosphere, differentiating between weather and climate and their influence on everyday life. It outlines key elements such as temperature, pressure, humidity, and precipitation, along with instruments used for measurement like barometers and anemometers. The document also categorizes types of clouds and precipitation, emphasizing the variability and permanence of atmospheric conditions.

1. NAZIMA TAHSEEN. K
ACADEMIC COORDINATOR
VELAMMAL BODHI CAMPUS
Posted - 2.9.2018

2. NAZIMA TAHSEEN. K
ACADEMIC COORDINATOR
VELAMMAL BODHI CAMPUS
TAMILNADU , INDIA.
Email – nazima.tahseen@gmail.com
Posted - 2.9.2018

3. Composition
and structure
of atmosphere

4. How is it outside today?
Is it hot?
Is it cold?
Do you want fan?

5. N
o
Weather Climate
1 It is the condition of
atmosphere at a particular
place over a short period of
time.
It refers to the average
weather conditions over a
long period of time, 25 to
30 years.
2 It is not constant. It is
always changing.
It is permanent. Eg- India
– Tropical monsoon
climate
3 It influences our everyday
activities
It influences our way of
life. – Clothes , Houses ,
crops we grow etc.
Weather and Climate

6. Elements of Weather and Climate
•Temperature Pressure
•Winds Humidity
•Precipitation Sunshine
•Cloud cover

15. Ocean current : Warm
ocean currents increase
the temperature of nearby
coastal areas. Cold ocean
currents decrease the
temperature of nearby
coastal areas.

18. The standard unit of
measuring temperature is
degree Celsius. It was
invented by Anders
Celsius.
On the Celsius scale the
water freezes at 0°C and

21. Instrument used to
measure
atmospheric pressure is
called Barometer.
 It is measured in
Millibars.
Two types :Mercury
Barometer and Aneroid

28. •Instrument -to
measure wind direction
is Wind Vane.[
•Instrument used to
measure speed of wind
direction is

29. Anemometer -
Speed of wind.

31. Permanent winds are
the trade winds(they
help in movement of
ships), westerlies(blow
from sub tropical high
pressure belt to sub
polar low pressure belt)
and easterlies.

32. They are permanent
winds because they
blow constantly in a
particular direction
throughout the year.

37. Absolute Humidity:
Actual amount of
water vapour in a
given volume of air is
Absolute Humidity.

40.  Types of clouds : cirrus , stratus , cumulus ,
nimbus
--- Cirrus Cloud


41. Stratus

42. Cumulus

43. Nimbus

49. Four types of
precipitation :
Rain , Snow ,
Sleet , Hail.