martes, 18 de febrero de 2014

Science - Water Cycle Rap. For 3rd graders

Do you remember this song? Eva brought it and you had a lot of fun. You can listen to it again. And now you can read the lyric and understand it a little bit better.


And now the lyric:


(I rise to the sky from the sea below…)
(Then down to the ground as rain or snow…)
Verse I
I represent the movement of water—that’s my purpose
Whether on, above, or below the earth’s surface
In a continuous cycle, my work’s never done
’Cause I’m driven by energy from the sun

I travel through the sea, through the air, through the ground
You could say that water really gets around
But in fact most water’s just chillin’ in the oceans
Only a small fraction is really in motion at any given time

But yo—that’s the way it goes
When we’re studying the voyages of H2O
In the cycle water changes states at various places
The three states being ice, liquid, and water vapor

But this cycle strays from the norm
‘Cause through the process, water still keeps the same structural form
While other cycles involve chemical change
Water may change states, but its structure stays the same
Chorus
I rise to the sky from the sea below
Then down to the ground as rain or snow
I keep it moving, moving, ’cause I’m the water cycle
Moving, moving, ’cause I’m the water cycle
I rise to the sky from the sea below
Then down to the ground as rain or snow
I keep it moving, moving, ’cause I’m the water cycle
Moving, moving, ’cause I’m the water cycle

Verse II
So when water transforms from liquid to gas
And rises up into the atmosphere, that’s evaporation
A process made possible by energy from the sun
Also known as solar radiation

And when this water vapor in the sky reforms
Into liquid water droplets, that’s condensation
And when this water falls back down to the earth
As rain, snow, hail, or sleet, that’s precipitation

But plants have their own type of evaporation
Through their stomata, which is called transpiration
So collectively the term used for transpiration
Plus all other evaporation is evapotranspiration

Two more terms to add to your collection:
The movement of water through the air is advection
And speaking of keeping it moving, understand
That runoff is water flowing across the land
Chorus
I rise to the sky from the sea below
Then down to the ground as rain or snow
I keep it moving, moving, ’cause I’m the water cycle
Moving, moving, ’cause I’m the water cycle….

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