Warm air rises and cold air sinks. Global Winds Wind current on a global scale. Warm air rises and cold air sinks. Temperature Differences Rising and sinking air makes pressure differences Pressure Difference Mr. Fetch’s Earth Science Classroom

Global Temperature Patterns The sun’s rays are weaker near the equator causing less warming. The air here is cool. The sun’s rays are stronger near the equator causing more warming. The air here is warm. Mr. Fetch’s Earth Science Classroom

Air moves between the equator and the poles. Global Winds Hadley Cells. Air moves between the equator and the poles. Global Winds Mr. Fetch’s Earth Science Classroom

The Coriolis Effect Coriolis Effect Air does not move in a straight line because of Earth’s rotation. Coriolis Effect Mr. Fetch’s Earth Science Classroom

Global Winds Northern Hemisphere Southern Hemisphere Mr. Fetch’s Earth Science Classroom

Global Winds Remember, winds are named from where they come. 60°N 30°N Polar Easterlies - From 90°N to 60°N - Deflected to right 60°N Prevailing Westerlies - From 30°N to 60°N - Deflected to right 30°N Easterly Trade Winds - From 30°N to O° - Deflected to right Doldrums 0° Easterly Trade Winds - From 30°S to 0° - Deflected to left 30°S Prevailing Westerlies - From 30°S to 60°S - Deflected to left 60°S Polar Easterlies - From 90°S to 60°S - Deflected to left Mr. Fetch’s Earth Science Classroom