Water from lakes etc evaporates using heat from the Sun., 1, Warm water vapour rises through the atmosphere., 2, The warm water vapour begins to cool high up in the atmosphere. , 3, Cold air cannot hold as much water vapour as warm air, so the water vapour condenses.. , 4, This condensation happens on the surface of microscopic dust or smoke particles in the air. , 5, As more and more condensation occurs, a cloud forms. , 6, When the droplets or crystals grow heavy enough, they fall back to Earth as rain, snow, or hail., 7.

排行榜

视觉风格

选项

切换模板

)
恢复自动保存: