GLOBAL Winds

What is Wind, and What Causes It? Use the Dropdowns to complete the paragraph. What is wind?Wind is air in motion. It is produced by the uneven heating of the earth’s surface by the sun. Since the earth’s surface is made of various land and water formations, it absorbs the sun’s radiation unevenly. The differences in heating create different regions of air pressure. High pressure systems consist of colder, heavier air. Low pressure systems have warmer, lighter air. Local Winds Move items to the correct category. Mountain Breezes During the night the slopes of a mountain cool and the dense air descends into the valley. Happens because land loses heat quickly at night. Valley Breezes During the day, the sun heats up the mountain slopes and the air rises while the valley air is cooler and moves up the slope into the low pressure area. Happens because land absorbs radiation during the day. Global Winds Global Winds Use the following LETTERS to label the image.A. EquatorB. Polar EasterliesC. WesterliesD. Tradewinds A D B C D C B Use the Dropdowns to complete the paragraph. What are the global wind patterns?The equator receives the Sun's direct rays. Here, air is heated and rises, leaving low-pressure areas behind. Moving to about thirty degrees north and south of the equator, the warm air from the equator begins to cool and sink. Between thirty degrees latitude and the equator, most of the cooling sinking air moves back to the equator. The rest of the air flows toward the poles. Matching Polar Easterlies Above 60 degrees latitude. Cold air that blows east to west Westerlies Between 30 and 60 degrees latitude. Blow west to east. Responsible for weather movements across the U.S. Trade Winds Between 30 degrees latitude and the equator. Warm air that blows east to west. Doldrums Area near the equator with little to no surface winds (calm areas). Sort the following winds by the direction they move. Blow East to West Polar Easterlies Trade Winds Blow West to East Westerlies Local Winds vs Global Winds Local Winds Blow over relatively short distances Occur over small areas Land and Sea breezes Mountain and Valley breezes Global Winds Blow over great distances Trade winds Easterlies and Westerlies Jet Stream The Jet Stream Sort the Jet Stream Properties True Blow from West to East Can be located in the Upper Troposphere Jet streams can affect our weather by moving it from one place to another False Bands of mild wind Airplanes do not fly in the jet stream The path of the jet stream changes slowly over time The Coriolis Effect Sort the Coriolis Effect Properties True the Coriolis Effect is a phenomenon that causes fluids (water and air) to curve as they travel across or above Earth's surface Points near the equator are moving faster than points near the poles At the center of a hurricane, there is an area of very low pressure Air in the Northern Hemisphere, gets deflected to the right Air in the Southern Hemisphere, gets deflected to the left False The Earth spins on its axis constantly from East to West Wind always travels in a straight path The high pressure air surrounding the hurricane's center, or eye, rushes away from the low pressure area in the middle