1. Wind By: Amanda Angel T-4 9/22/05

2. What Causes Wind All winds are caused by differences in air pressure Most differences in air pressure are caused by unequal temperature in the atmosphere

3. Measuring Wind The speed of wind is measured by an anemometer There are three-four cups mounted on the end of spokes There is a speedometer attached to tell the speed of wind

4. Wind Chill Factor Increased cooling caused by wind is the wind chill factor.

5. Global Winds Global winds are winds that blow steadily over long distances The movement of air between the equator and the poles produce global winds

6. Land and sea breezes The flow of wind from land to water is a Land Breeze The flow of wind from water to land is a Sea Breeze

7. Local Winds Local winds are winds that blow over short distances Local winds are caused by unequal heating in a small area They only occur when there are no winds blowing from far away

8. The Coriolis Effect The coriolis effect is the way earth’s rotation causes winds to curve.

9. The Major wind belts The major wind belts are the trade winds, the prevailing westerlies, and the polor easterlies

10. Review Questions How does the unequal heating of Earth’s surface?Because it causes difference in air pressure, which causes causes winds. How are local winds and global winds similar?How are they different?They are both types of winds.Local winds occur in small areas and Global winds occur in large areas. Name the three major wind belts.Trade winds, prevailing westerlies,and the polor easterlies0. Imagine you are flying from Seattle to San Francinsisco, which is almost exactly due south to Seattle. Should the pilot set course due south?Explaine your answer.No, because the winds will cause the flight to go a little off course.

11. Web Resources NOAA.gov Google.com Ask.com Dogpile.com Yahoo.com