Forms of moisture in the enviroment are: 1-Snow:Clouds are so light that they float in the air .When they reach a place with a very low temperature ,water particles in the clouds change into snow and begin. 2-Hail:Sometimes,when water particles in clouds begin to fall ,they experience strong and cold winds.Due to this,water particles combine together and make big balls of ice called hail. 3-Fog:Fog is formed due to the water vapour present in the air.In winters,smoke and dust mix with the water vapour and suspend in the ar.