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Saturday, November 16, 2013

Evaporation


We wondered if clouds were white because of salt from the sea. We know that sea water evaporates and the water vapour goes up and makes clouds, but when we taste the rain it isn't salty. Does the salt stay in the cloud and make it white?

We mixed salt and water until all the salt dissolved. We couldn't see it in the water but we knew it was still there because we tasted it. Yuk!

We poured the salty water onto a plate and left it on the bench.

We didn't see any water vapour in our room, but the water disappeared and we were left with this...


At first we thought it was ice, but it wasn't. It was salt. The water evaporated but the salt stayed behind.

The salt doesn't go up to the clouds.

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