Sunday, August 29, 2010

Stayed Awake For 30 Hours. Why Cant I Sleep

Why the wind blows? CF No. 167


SCIENCE EASY
No. 167 Author: Maria Cristina Chaler. Series
Juguemos to why?
Why the wind blows?

the wind can be defined as the moving air in the atmosphere that surrounding inspires poets and muses and their presence often benefits nature and other harm to humans.

There are two major causes which this movement occurs globally, ie across the globe.

v Differences in temperature between the poles and generating Ecuador density differences in the atmosphere and thus pressure variations and therefore air movement. Cold air is denser and decreases (thermal anticyclone) is closer to the surface while, the warm less dense and rises (cyclone heat) causing air movement in the atmosphere. In Ecuador, the rise of air produces leaving room for the cold air from the poles while Ecuador is hot air toward the poles, cold air from the poles is directed Ecuador. It thus generates a circulation from Ecuador and from pole to pole Ecuador maintaining the balance of absorbed solar energy.


v earth's rotation creates the Coriolis effect on the matter of the planet, as the air is matter affected. Air circulation from Ecuador to pole does not occur in a linear but deviates slightly to the east in the northern hemisphere and westward in the southern hemisphere this deviation motivated by the effect of rotation of the earth. There
other causes that influence the wind blows locally but always with the same physical principle.

For example proximity to the sea during the day makes the air above the water is colder (more dense) than they are on the ground (less dense) so that the land will rise and will result in entering the sea air cooler and denser, creating a sea breeze. When night
movement will be reversed because the land cools and the air stays warm on the sea so that the winds will blow in the opposite direction.

The general rule is that which provides that the Warm air rises and leaves the cooler and place next to circulate on the surface from the coldest to the warmest, while high in the air circulation is opposite.

differences in areas highlighted during the day for the higher areas are giving way to warmer air penetration to the lower areas the wind blows during the day from the valley to the top, reversing the movement of wind over night because the top is cooled and the valley is warmer.

When temperatures in both areas s even then there is a period of calm with no wind, no movement sensitive.
wind speed depends on the temperature differences of quality and cold areas, the more differences there are, the more movement and therefore greater speed.
cyclonic and anticyclonic winds

Cyclones are low pressure areas, the opposite happens to the cyclone where the pressure is high.
In the world there are cyclones and anticyclones located permanently in the air makes are never calm for hurricane zone will lead to the entry of air from surrounding areas cyclones. There

cyclonic and anticyclonic areas which vary with the seasons of the year generating seasonal winds change direction according to the annual weather station.

Different types of air movement (wind) are not always the same and have the same energy and go from nice to be dangerous.
can be classified by intensity

Breeze v v v Temporary

v Storm v Typhoon Hurricane

According lasts as long as the movement is called:
v gusts, wind increases in short time. V
squalls, winds with average times.
classified according to their direction depending on where the movement is taking into account the wind rose. A

scale called Beaufort Scale to estimate wind speed
Graduated from:
Force 0 (zero) (calm) (2 km / h) to Force 12 (fourteen) (hurricane) ( 120 km / h) through intermediate values \u200b\u200bas

Air slight (2 to 6 km / h)
Light Breeze (7 to 11 km / h)
Gentle Breeze (12 to 19 km / h) moderate breeze
lower speed (20 to 29 km / h) moderate breeze
faster (30 to 39 km / h)
strong breeze (40 to 50 km / h)
Gale moderate (51 to 61 Km . / h)
Gale half (72 a74 km / h)
Strong Gale (75 to 87 km / h)
Strong gale (88 to 101 Km / h)
Storm (101 to 120 km / h)

Playing to why we are every day a little wiser

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