Let's Make Oobleck!
|
Title |
Colloid Oobleck |
|
Subject |
Science |
|
Grade level |
Any (with adult supervision) |
|
Time duration |
5 minutes |
|
Overview |
Create a simple Non- Newtonian Fluid |
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Objective |
Learn what a Colloid and Non-Newtonian fluid are. |
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Materials |
Corn Starch, Water, Optional: Food Coloring |
|
Lesson |
A Colloid is a substance that seems like it's one thing, but is actually made of two or more things. Foods like jelly and bread dough are Colloid substances. A Non-Newtonian fluid is a fluid that changes its properties when energy is applied to it! Oobleck is a great example of both of these! Follow the directions below and make your own... |
Step-by-Step
- In a bowl, create a mixture that is 2/3 corn starch and 1/3 water. (If you want some color in your mixture, add in a bit of food coloring to the water before mixing.)
- Let it sit for a few minutes.
- Stir the mixture with a spoon or your hand.
- You're finished! Your oobleck is sticky, so be sure to keep it contained to a small area, like a plate.
|
Try this! |
Take your finger and poke it into the Oobleck. If you Poke fast, it will be act like a solid and your finger won’t enter. But if you poke the Oobleck slowly it will sink in like quicksand! |
Extra Credit
Can you think of another example of a Colloid? What about another example of a Non-Newtonian fluid? I will give you a hint… it likes to hang out with jelly!
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