Atmospheric pressure

It is the force that is caused by the weight of the air column above the surface.

Anticyclone When the air exerts a greater force than the average weight of air on Earth, this is called anticyclone.  Having an excess of air, it should be released.  The air goes from the upper part Atmospheric pressure is measured with the barometer.  It is expressed in millibars. , creating stable weather.	Barometer
Cyclone When the weight of the air is less, it produces what is referred to as a cyclone, depression or area of low pressure.  Since it has less air, it receives the excess air from the anticyclones.  It enters underneath and rises to fill the upper layers, producing instable weather.
Representation Through lines that join points of equal pressure, called isobars. Measurement Atmospheric pressure is measured with the barometer.  It is expressed in millibars.

Isobars

Areas of high or low pressure

High pressure	Low pressure
Source: http://www.juicygeography.co.uk

The wind

Introduzca los términos de búsqueda. Envíe el formulario de búsqueda

Web www.claseshistoria.com

Home | Topics | Site map       Síguenos también en:

© Guillermo Méndez Zapata, profesor del IES Juan de la Cierva de Vélez-Málaga
Licenciado por la Universidad de Málaga (España)  

Jorge Juan Lozano Cámara, profesor del IES Juan de la Cierva de Vélez-Málaga
Licenciado por la Universidad de Granada (España)  

Ana María Marcos Sánchez, profesora del IES Juan de la Cierva de Vélez-Málaga
Licenciada por la Universidad de Málaga (España)

Kerry Elyse Hart, Licenciada por la Universidad de Richmond (Virginia, USA)