Friday, March 2, 2012

Ooey, Gooey, OOBLECK

As a part of Read Across America and Dr. Seuss's birthday, we read Bartholemew and the Oobleck

In science, we are studying solids and liquids. We made oobleck in science. Is oobleck a solid or a liquid? It was up to the first graders to find out! When you punch it hard, it feels like a solid, but if you poke it slow it feels like a liquid. It pours, but you can also squeeze it. Oobleck has properties of both a solid AND a liquid! We can make oobleck act like both a solid and a liquid. A liquid like this is called a non-Newtonian fluid because it does not follow the rules that Newton discovered most liquids follow. Pretty cool, huh? 
What we know about solids and liquids
Hey this stuff is pretty cool!
Feels pretty weird too!

Definitely very MESSY!

Hmm, I can kind of roll it in a ball, so it MUST be a solid!

But hey, it can pour out of my hands, so it MUST be a liquid! 


Here's the recipe for oobleck -- make some at home!
  • 2 cups cornstarch
  • 1 cup water
  • A few drops of food coloring
 That should get you to a good starting place, then add more water or cornstarch until you reach the right consistency.

No comments: