Tuesday, May 5, 2009

This week the 7th Age scientists made two separate concoctions: oobleck and flubber.

Oobleck might sound familiar (hense the beloved Dr. Seuss book: Bartholomew and the Oobleck. Written in 1949, it follows the adventures of a young boy named Bartholomew, who must rescue his kingdom from a sticky substance called oobleck.)

We made oobleck at school using the following ingredients:

2 cups of corn starch
1 cup of water
food coloring (optional)

We found oobleck to be slimy and gooey, with a consistency similar to thick milk or runny yogurt! The boys had an especially fun time feeling oobleck with their fingers!

We discovered oobleck was a liquid.

Later on this week we will make flubber. Here are the ingredients for you to make it at home:

Container 1: (mix together)
1 1/2 cups warm water
2 cups white glue
food coloring (a few drops)

Container 2: (mix together)
1 1/3 cups warm water
2 teaspoons Borax

Directions: Pour Container 2 into Container 1. Gently lift and turn the liquid until only about a tablespoon of liquid is left. What do you observe? The flubber will be sticky for a moment or two. Let the excess liquid drip off, and the flubber will be ready. What does the flubber look like? Is it a solid, a liquid, or neither?

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