The Earth is heated unevenly, Hot, less dense air rises, Cold, more dense air moves to fill the low pressure space created. - Describe what causes wind., During the day, hot air over land rises. Cool air over the sea blows in. - Describe a sea breeze., During the night, hot air over the sea rises. Cool air from over the land blows in. - Describe a land breeze., The rotation of Earth causes some "swing" to the north to south motions of air currents, making them appear curved. - Describe the Coriolis Effect. , trade winds - You are caught in a wind that blows towards the equator from about 30° latitude. Where are you?, doldrums - You reach a windless area near the equator. Where are you?, sea breeze - Near a coastal town, warm air is rising as cooler air from over the sea moves in to take its place. Where are you?, land breeze - You head out at night, and you notice the winds have reversed. Now the cooler air over land moves out towards the rising ocean air. Where are you?, prevailing westerly - Warm air is moving towards the poles as you travel from about 30° to 60° latitude. This pushes you along at a nice speed. Where are you?, jet stream - At high altitudes you find yourself gliding along effortlessly in a narrow belt of wind created by warm tropical air and cold polar air meeting. , polar easterlies - Between the North Pole and 60° latitude, you feel a cold, dry, dense, horizontal air current. Where are you?,

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