英語學習水循環(huán)WaterCycle課件

1、The Water CycleTo understand the processes involved in the water cycle1hWhat is Evaporation?It is the process of a liquid heating to form a gas2hWhat is Condensation?It is the process of a gas cooling to form a liquid3hThe Water CycleWater is constantly moving between sea, air and land4hThe Water Cy

2、cleWater is constantly moving between sea, air and landThe sun shines and the sea is heatedheat5hThe Water CycleWater is constantly moving between sea, air and landEvaporationThe water evaporates and forms clouds6hThe Water CycleWater is constantly moving between sea, air and landCondensationAs air

3、rises it cools and condenses. It reaches the ground as rain, snow, sleet or hail.7hThe Water CycleWater is constantly moving between sea, air and landThe snow melts and flowsRivers flow to the seaLakes formSnow forms8hThe Water CycleWater is constantly moving between sea, air and landThe Water Cycle

4、 is complete9hThe Water CycleWater is constantly moving between sea, air and land10hThe Water CycleWater is constantly moving between sea, air and landThe sun shines and the sea is heatedheat11hThe Water CycleWater is constantly moving between sea, air and landEvaporationThe water evaporates and for

5、ms clouds12hThe Water CycleWater is constantly moving between sea, air and landCondensationAs air rises it cools and condenses. It reaches the ground as rain, snow, sleet or hail.13hThe Water CycleWater is constantly moving between sea, air and landThe snow melts and flowsRivers flow to the seaLakes formSnow forms14hThe Water CycleWater is constantly moving between sea, air and landThe Water Cycle is complete15hThe Water CycleWater is constantly moving between sea, air and landQuestionsWhere does the water come from?What happens to it when the sun heats it up?As the vap