We had a cup of water on the window sill for a few days. It used to be full, up to the line, but now some of the water has evaporated.
Today we learned all about the Water Cycle. We know that water when heated will turn in to gas (this is called evaporation). Gas outside will form clouds, clouds will join together to form bigger clouds and they will let the water fall back to earth as rain. This rain will turn to puddles, rivers and seas. The sun outside will cause the water again to evaporate, and the water cycle will keep on going.
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