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Floating Needle

Materials

  • Water
  • Bowl
  • Newspaper
  • Sewing needle
  • Liquid detergent
Directions
  1. Cut out a piece of newspaper about two inches square.
  2. Fill the bowl with water and float the newspaper on the surface of the water.
  3. Place the needle in the center of the newspaper.
  4. Carefully push the edges of the newspaper down into the water.
  5. As the newspaper gets wet and sinks, it will leave the needle floating.
  6. Now add a drop of liquid detergent to the water at the edge of the bowl.
  7. Notice how the needle quickly sinks to the bottom.
Note: Surface tension made it possible to float the needle on water. The needle was supported by the water. The detergent caused a break in the surface tension around the needle and it sank.
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From 365 Smart After-School Activities by Sheila Ellison & Judith Gray. Copyright © 2005 by Sheila Ellison & Judith Gray. All rights reserved. Used by arrangement with Sourcebooks, Inc.

Buy the book at www.amazon.com.


September 1, 2014



Don't forget to hydrate! Forego sugary juices and sodas and pack a bottle of water in your child's lunch. If your child likes a little more flavor, spice it up with lemon, lime, cucumbers, or fresh fruit.


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