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By Sharifa Reid
Kemara Matthews
Judian Dick
Orien Wellington
Nicole Belcher-Palmer
What is Weather
The weather is all around us.
It is an important part of our
lives and one that we cannot
control. Instead the weather
often controls how and
where we live, what we do,
what we wear and what we
eat.
Weather Elements
 Wind
 Temperature
 Humidity
 Clouds
 Precipitation
Wind
Wind is air in motion. It is
produced by the uneven
heating of the earth’s
surface by the sun. Since the
earth’s surface is made of
various land and water
formations, it absorbs the
sun’s radiation unevenly.
Two factors are necessary to
specify wind: speed and
direction.
Temperature
 Temperature is a degree
of hotness or coldness
the can be measured
using a thermometer. It's
also a measure of how
fast the atoms and
molecules of a substance
are moving. Temperature
is measured in degrees
on the Fahrenheit,
Celsius, and Kelvin
scales.
Humidity
 "Humidity" refers to the presence of water vapor in the
atmosphere. It is measured in either relative terms
(relative humidity) or absolute terms (dewpoint
temperature).
Water vapor is, as the name implies, the vapor form of
water. It is totally transparent, just like the rest of the
gases in the atmosphere. So, we really can't see humidity
with our eyes...only the effects of water vapor condensing
back into water droplets (such as in the photo above).
Clouds
 What are clouds?
A cloud is a large collection of
very tiny droplets of water or
ice crystals. The droplets are so
small and light that they can
float in the air.
All air contains water, but near
the ground it is usually in the
form of an invisible gas called
water vapor
Precipitation
 Precipitation takes place when
water condensation becomes
sufficient that water droplets
are heavy enough to fall back to
the surface of the Earth.
Precipitation is a very common
phenomena in the atmosphere
of our Earth. This precipitation
always comes from clouds. Yet
most clouds do not form
precipitation.