Beautiful salt!

Do you know how beautiful salt can be?  When we did an experiment this week (finishing off some ideas from last term), we ended up with these amazing salt crystals:

Look closely - there are incredible patterns!

The experiment was based on the question:  If sea water evaporates, how come it doesn't rain salty water?  So we made some salty water (just normal kitchen salt mixed with tap water) and put a few spoonfuls onto a plate in the sun...and waited!  After a couple of days, most of the water had evaporated and we were left with these stunning crystals!  You CAN try this at home!