EVAPORATION/CONDENSATION: FACTORS AND AIR MASSES Name: Today’s Date: Per. Due Date: Because precipitation is determined by how much water vapor this is, one must look at how the amount of water vapor is affected by the amount of evaporation. Complete the table below. Factors affecting Evaporation Evaporation will be: Air Temperature If air temperature is high . . . Higher or Lower If air temperature is low . . . Higher or Lower Water temperature (below air) If water temperature is higher . . . Higher or Lower If water temperature is lower . . . Higher or Lower If conditions are windy . . . Higher or Lower If conditions are not windy . . . Higher or Lower If humidity is already high . . . Higher or Lower If humidity is low . . . Higher or Lower Wind Amount of water already in air In order for precipitation to occur, there must be clouds present, and is partly determined by how much condensation occurs. Complete the table below which shows factors affecting condensation: Factors affecting Condensation Condensation will be: Air Temperature If air temperature is high . . . Higher or Lower If air temperature is low . . . Higher or Lower Humidity of air If humidity is higher . . . Higher or Lower If humidity is lower . . . Higher or Lower If air pressure is higher . . . Higher or Lower If air pressure is lower . . . Higher or Lower Air Pressure Created by Roger Groom (MTMS), 2/18/2016 In the Northern Hemisphere: Low pressure systems draw air in towards them in a counterclockwise direction. See diagram to the right. This is called a _________________________. High pressure systems push air out away from them in a clockwise direction. This is an ___________________. See diagram to the right. Precipitation is affected by rates of evaporation and condensation, and is usually determined by satellite and radar images showing moisture content in the air, and cloud cover. The picture to the right is a satellite image of cloud cover. Radar images (sometimes called Doppler Radar) determine moisture content of the air. Images taken from http://www.usatoday.com/weather Created by Roger Groom (MTMS), 2/18/2016 H L