How many stages does the water cycle have?
Four.
Are oceans fresh water or salt water?
Salt water.
What is water on the surface of earth? 
Surface water.
In what stage of the water cycle do water droplets fall to the earth? 
Precipitation.
Is snow fresh or salt water? 
Fresh water.
What are the movements of water on the surface of the sea? 
Waves.
In what stages of the water cycle does the sun heat water, causing it to form vapor? 
Evaporation.
Are seas fresh water or salt water? 
Salt water.
What is water deposited under the surface of earth? 
In what phase of the water cycle do tiny water droplets form clouds? 
Condensation.
Are lakes fresh water or salt water? 
Fresh water.
What are the movements of large parts of water in the seas and oceans? 
Ocean currents.
In what stage of the water cycle do rivers go into the sea? 
Collection.
Are rivers fresh water or salt water? 
What are the constant rise and fall of sea level? 