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四川省成都七中高一英语外研版必修四素材(文章)Module 1 Wind Energy
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  • 资源类别素材
    资源子类文本素材
  • 教材版本外研版(现行教材)
    所属学科高中英语
  • 适用年级高一年级
    适用地区全国通用
  • 文件大小598 K
    上传用户kirinye
  • 更新时间2016/8/23 11:25:02
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资源简介

Wind is simple air in motion. It is caused by the uneven heating of the earth surface by the sun. Since the earth surface is made of very different types of land and water, it absorbs the sun heat at different rates.

During the day, the air above the land heats up more quickly than the air over water. The warm air over the land expands and rises, and the heavier, cooler air rushes in to take its place, creating winds. At night, the winds are reversed because the air cools more rapidly over land than over water.

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