Yr 8 - Geography

Air rises because the ground heats it It rises as currents of air called convection currents Because of this we call the rainfall 

Wind is moving air When wind meet obstruction it goes up As the air rises it cools From that we get rain which we call relief rainfall

Air masses move around the earth (Air masses are blocks of air) When warm and cold air masses meet The warm air mass rises It condenses and we get frontal rainfall