Weather And Climate
In
the previous chapter you learned about the atmosphere. You know that it keeps
on changing every moment and is never static. Any change in the atmosphere gets
reflected in the weather of a place. In this chapter, you will learn about the
elements of weather and the factors that affect these elements.
WEATHER
AND CLIMATE
We
have learned that the temperature varies in each layer of the atmosphere.
However, the temperature of the earth is mostly related and affected by the
lowest layer of the atmosphere, that is the 'troposphere'. In this layer, all
th phenomenon of the weather occurs. Thus, this is most active, effective and
volatile layer. Also, the weather in turn is affected by the amount of
moisture, air pressure, temperature and movement of air. Whenever these
features of the atmosphere change, it results in the change of weather
conditions. Weather is the condition of the atmosphere at a particular
place over a short period of time. Climate, on the other hand, is the
average weather conditions over a longer period of time, say over a period of
20 to 30 years.
ELEMENTS
OF WEATHER AND CLIMATE
Atmospheric
temperature, air pressure and precipitation are different aspects that control
weather conditions. Thus the various elements of weather are?temperature, air
pressure, wind, cloud, moisture, rain, etc.
The
elements of weather can be measured and recorded at a weather station. People
who study weather are called meteorologists. Weather reports are
prepared by the meteorological department. They use various instruments such as
barometers, thermometers, wind vanes and radars, to gain information about the
weather.
Daily
readings of instruments recording the various elements of weather are taken
every 24 hours. Satellites hovering over the earth send
Weather
|
Climate
|
1. Weather refers to the general atmosphere
conditions of a day.
2. There can be multiple weather conditions in a
day.
3. It is the average record of atmospheric
temperature, atmospheric pressure and rainfall over a small area on a daily
basis.
4. Weather is described as hot, cold, sunny,
cloudy, windy, calm, wet and dry.
|
1. Climate is the total sum of weather conditions
and variations over a long period of time.
2. Climate conditions take years to change.
3. It is the aggregate of atmospheric
temperature, atmospheric pressure and rainfall over a large area over 30
years or more.
4. Climate is described as equable, extreme,
tropical and temperate.
|
Various weather instruments
Activity
Read
the given weather report from the newspaper. What are the different
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