Chapter 4 Study Guide

Chapter 4 Study Guide - Chapter 4 Study Guide Air pressure...

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Chapter 4 Study Guide Air pressure – pressure produced by the motion, size, and number of gas molecules and exerted on surfaces in contact with the air Millibar – a way of expressing force per square meter of surface area Barometer – any instrument that measures air pressure Wind – horizontal motion of air across Earth’s surface Anemometer – measures wind velocity Wind Vane – determines wind direction; winds are named from the direction they originate Isobar – an isoline connecting all points of equal pressure Pressure gradient force – drives air from areas of higher barometric pressure to areas of lower barometric pressure, causing winds Coriolis force – an apparent deflective force; appears to deflect wind from a straight path in relation to Earth’s rotating surface; to the right in the Northern Hemisphere and to the left in the Southern Hemisphere Friction – the effect of drag by the wind as it moves across a surface; may be operative through 500m of altitude
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This note was uploaded on 11/11/2010 for the course GPH 111 taught by Professor Bass during the Spring '08 term at Mesa CC.

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Chapter 4 Study Guide - Chapter 4 Study Guide Air pressure...

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