Science Projects

I am frequently searching pinterest for great ideas for the kids.  I have selected some science projects that I found there to try out this summer.  Here are a couple of the winners:

The Exploding Sandwich Bag
What you will need:
-sandwich sized ziplock bag
-1/4 c warm water
-1/2 c vinegar
-1T baking soda
-toilet paper

Tear off a square or two of toilet paper and put a tablespoon of

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baking soda in the middle.  Twist or fold the toilet paper around
the pile of baking soda making a small packet.
Next, open your sandwich bag and pour in 1/2 cup vinegar and
1/4 cup warm water. Zip the bag closed, but not all the way.
You'll want a small opening just large enough to drop in the
packet of baking
soda.  Move the experiment to the sink or outside!  Put the baking
soda packet into the bag and then quickly zip it all the way
closed.  (I found it helpful to carefully put the packet in, then
hold it towards the top away from the liquid so I could zip the
bag all the way closed, then let it drop in)
Once the bag is sealed, give it a quick, gentle shake so the
packet drops into the liquid and set it down.  The reaction will occur
almost immediately and the bag will start to fill with carbon dioxide
It'll get bigger and bigger until it finally POPS! Site I borrowed this from: http://www.cometogetherkids.com/2012/02/exploding-sandwich-bag-experiment.html Swirling Colors Milk What you will need: -milk (whole or half and half - skim won't work) -tray or shallow bowl -food coloring -cotton swabs -liquid dish soap (dawn works well) Pour some milk into your tray.  You'll want it at least 1/4" deep. Add several drops of food coloring near the center of the tray. Dip a cotton swab into the color (don't stir it, just dip!).  Nothing really happens. Now, dip your cotton swab into your liquid dish soap and then dip back into your milk.   (again, don't stir, just dip it in and hold it in place for a few seconds!).  Watch how the colors "jump" away from the soap, and then begin swirling around on their own!