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