We are going
to explain about the water cycle: evaporation, transpiration, condensation,
precipitation, runoff and collection.
Evaporation is when the sun heats up the water
in rivers, lakes or the oceans. It transforms into steam or vapor. The steam or
vapor goes in to the air. Transpiration is when the plants give off a little
bit of water vapor.
Water vapor in
the air gets very cold and changes back in to liquid. The water vapor condenses
and forms clouds.
Precipitation occurs
when there is a lot of water condensed, and the clouds are full of water and
can’t hold any more the water. The clouds get heavy and it can rain or snow.
Runoff is the
movement of land water to the oceans mainly in the forms of rivers, lakes and
streams.
Collection is
when the water falls back to earth as precipitation, it may fall back in the
oceans, lakes or rivers or it may end up on land. When it ends up on land, it
will either soak into the earth as ground water or it may run over the soil and
collect in rivers, lakes or oceans.
Water is in a
constantly moving cycle and heat is the
key to how this happens. Water changes its form as it is heated or cooled.
When it is heated it turns to steam or vapor and when it is cooled it turns
back to a liquid or into solid ice.
We study allot to write this text. We hope you enjoy our presentation!
Daniel,Juliana,Catarina,Paul
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