Wind The horizontal movement of air from areas of high air pressure to low air pressure Difference in air pressure due to unequal heat from the sun
H Cold Air High Pressure More Dense L Warm Air Low Pressure Less Dense Molecules like to move from a crowded area to a less crowded area
Isobars mark areas with the same air pressure
Measuring Wind Speed: Use an anemometer. Wind Direction: Use a wind vane or wind sock. L
Naming Wind The name of the wind tells you where the wind is coming from. Ex: North wind comes from North (to South) H L N W E S Ex: West wind blows from the West to the East.
N W A. What is the name of Each wind E B. What Direction is the wind blowing? S A. Northwest Wind B. Southeast wind A. West Wind B. East wind A. Northeast Wind B. Southwest wind A. South Wind B. North wind
Local Winds that blow over short distances Caused by unequal heating of Earth’s surface within a small area. Ex: land breeze and sea breeze
Sea Breeze Land air around land warm up faster than water Wind blows toward land from the water
Land Breeze Land also cools faster than water At night, a wind blows toward the water from the land
Global Winds that blow over long distances due to unequal heating of Earth’s surface (more heat at equator)
Coriolis Effect A “curving of the winds” due to the rotation of Earth
Jet Stream High speed winds located 10 km above Earth’s surface that travel in a wavy path