Our World-- Water II

This week friends learned that the earth has small amount of water.  That water keeps going around and around and around and around. We call it the "Water Cycle".
This cycle is made up of a few main parts:

• evaporation
• condensation
• precipitation

Evaporation is when the sun heats up water in rivers or lakes or the ocean and turns it into vapor or steam. The water vapor or steam goes into the air.
Water vapor in the air gets cold and gets together forming clouds. This is called condensation. Check our youtube postings with friends performing "Water Cycle" song.

http://www.youtube.com/watch?v=WFXZwO-NOsg&feature=relmfu    

http://www.youtube.com/watch?v=JMi0Jj3SwJE     

During the Rain Walk, friends observed three steps of Water Cycle: condensation, precipitation and collection in forms of puddles and big water body- ocean.

When the sun strikes falling raindrops rainbow appears. To memorize rainbow colors, Sophie taught friends a rainbow song:

Red, yellow, orange,

green followed blue,

indigo and violet

This is rainbow song for you.

Precipitation occurs when so much water has condensed that the air cannot hold it anymore.  The clouds get heavy and water falls back to the earth in the form of rain, hail, or snow.