5to Science, Primer Bloque.

Water [blank_start]vapor[blank_end] in the air gets cold and changes back into liquid, forming clouds. This is called [blank_start]condensation[blank_end]

[blank_start]Evaporation[blank_end] is when the sun heats up water in rivers or lakes or the ocean and turns it into vapor or steam.

[blank_start]Precipitation[blank_end] occurs when so much water has condensed that the air cannot hold it anymore.

The water cycle has [blank_start]three[blank_end] principal stages. The water cycle purifies the [blank_start]water[blank_end].

CHOOSE ONE OF THE FOLLOWING WORDS TO COMPLETE THE EXPRESSIONS. DRANK _ WATER CYCLE _ DINOSAURS Because of the [blank_start]water cycle[blank_end], sometimes we drink water from the oceans. [blank_start]Dinosaurs[blank_end] drank the water that we are drinking today. Dinosaurs [blank_start]drank[blank_end] the water we are drinking today.

1./ People have to drink [blank_start]clean[blank_end] water. 2,/ Animals and plants need water to survive.