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Welcome to DIY Science

Here you can find cool experiments and activities you can do at home.  Send me a picture of yourself doing an activity with mom or dad and I will post as part of the slideshow on this page!

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May 1st, 2014

5/1/2014

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Picture
Here is a fun experiment to try that requires just a couple of supplies from your kitchen. Caution: this can get messy!
Gather the following:
1 cup water
1 to 2 cups cornstarch
Mixing bowl
Spoon
Food coloring (optional)
1.  Pour the cornstarch in the bowl. Feel the powder.  What does it feel like?  What can you tell about the size of the particles that make it up? 
2.  Pour the water in, a little at a time, first with a spoon, but then you might want to you your hand.  You want to reach a consistency which is between solid and liquid.  
3.  To test it...grab a potion of the oobleck. Pick up a chunk and roll it into a ball with your hands. Put the ball in the middle of you palm and don't move it.  It should turn to a liquid-y substance and run off your hand.
4.  Cool, right?
5.  When you are finished, clean up the area with soap water.

Try this:
Quickly poke at the surface of the oobleck with your index finger.  Does the substance act like a solid of liquid?
Now slowly insert your finger into the oobleck.  What does it act like now? 

Picture
Oobleck gets its name from the Dr. Seuss book Bartholomew and the Oobleck where a gooey green substance, Oobleck, fell from the sky and wreaked havoc in the kingdom.  This mixture is called a non-newtonian fluid.  It acts like a liquid until you apply forces to it.

Below is a a video of how some people had A LOT of fun with this really unique substance.

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Photo used under Creative Commons from arvindgrover