EVAPORATION

On a warm, [?] day, water in a glass seems slowly to disappear. This is because the energy from the sun is [?] the water up and turining the liquid water into water [?]. This process is called [?]. When the water [?], it becomes an invisible gas in the atmosphere. Evaporation takes place all over the earth, but especially in the [?] and [?] where there is lots of water.

CONDENSATION

As the water vapor rises, it cools off and [?] into water [?]. If the water vapor becomes extremely cold, it will form ice [?] instead of water droplets. As the water droplets or ice crystals grow bigger and more numerouos, they form [?].

PRECIPITATION

If water droplets or ice crystals become too [?], they can't stay in the air. They [?]. Water droplets precipitate as [?] and ice crystals precipitate as [?]. Sometimes the rain freezes before it hits the earth and precipitates as [?].

RUNOFF

This precipitation gathers into [?] and [?] that flow down to the lakes and oceans. This is called [?]. Not all of the water makes it back to the oceans and lakes right away. Some of it is used by animals and [?]. Some is froaen into [?]. Eventually, the animals and plants breathe the water out and the glaciers melt, releasing the water back into the water [?].