Heat Tranfer leads to Winds

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Heat Tranfer leads to Winds
1) Of the angle at which the sun’s heat and light comes to
earth. A sphere (like the earth) can NOT be heated the same
way from a single light source (like the sun). The sun is HUGE
compared to the earth, sort of like the image below:
In fact, the size difference is so dramatic that the suns’
radiation essentially comes to earth in parallel waves of energy.
The only parts of the earth that receives direct light and heat
are areas near the equator. Hear, radiation hits the earth
straight on, making these areas the warmest in temperature.
Areas near the poles receive the suns energy at a much more
shallow (oblique) angle, which means these areas are the coolest
places on earth.
The image below shows global air temperatures because of this
effect (the warmest areas are shown in orange and the coolest in
blue). Remember, air is set in motion by differences in
temperature and density, and the movement of air creates all
weather patterns on earth.
The rotation of the earth. The counter clock-wise spin of the
earth on its’ axis is responsible for time. We see the change of
time during the day as the sun crossing the sky, which is of
course an illusion. The sun is the stationary center of the solar
system – the rotation of the earth makes it seem like the sun is
moving. At any given moment, EXACTLY half of the earth is in
sun (day), and half is in darkness (night).
The earth’s surfaces that are in day
will be absorbing the suns energy, and the surfaces that are in
night will be releasing it. In the picture of the earth above, the
air above the continent of Africa will be warmer than the air over
the surrounding ocean creating differences in air movement, but
as the planet continues to rotate, this will change – and continue
to change. All of these variables combine to make the weather
impossible to completely predict.
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