Memory Water cycleVersion en ligne Match the word with its meaning. par Annalisa Farrugia Hygroscopic nuclei The loss of moisture from water surfaces and the soil. A type of rainfall that occurs when a warm airmass meets a cold airmass. A solid surface such as dust, over which condensation occurs. Evaporation The boundary between two air masses. Convectional rainfall Condensation Dew point When water vapour changes back to water droplets. The loss of water from vegetation. Frontal rainfall Front A type of rainfall that occurs when warm air meets a mountain. Any form in which water falls from the sky. Relief rainfall The critical temperature at which air becomes saturated. Water cycle Precipitation Transpiration A type of rainfall that occurs when air rises as it is heated by the hot ground below. The movement of water between air, sea and land.