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Fun Science Projects for Kids


Attack of the Killer Slime
The poor toy soldier is defenseless against killer slime.
The poor toy soldier is defenseless against killer slime.
©2007 Publications International, Ltd.

It's not a monster movie, but the "Attack of the Killer Slime" is just as entertaining. The "victim" is a toy soldier, and the slime is actually a corn syrup concoction.

In this project, you'll create a slime chamber for the unfortunate toy solder, and in the process, you'll learn something about "viscosity." Viscosity is the way a liquid will resist flowing -- viscous liquid is sticky and slow-moving. For example, motor oil in cars has a high viscosity. It sticks to the metal parts and prevents wear and tear on the engine that would otherwise occur due to friction.

You'll need to ask an adult for help with some of this project, such as the drilling and gluing. And be sure to wear goggles when you drill, even if you have adult help.

The slime flows slowly onto the toy soldier because the slime has a high viscosity.
The slime flows slowly onto the toy soldier because the slime has a high viscosity.
©2007 Publications International, Ltd.

What You'll Need:

  • 2 baby food jars with lids
  • Strong glue
  • Small plastic toy soldier
  • Goggles
  • Drill, with 1/4-inch drill bit
  • Light corn syrup
  • Green food coloring
  • Spoon

Step 1: Glue the tops of the baby food jar lids to each other, flat side to flat side. Glue the plastic soldier to the inside bottom of a baby food jar. Let the glue dry.

Step 2: Put on the goggles. Ask an adult to help you drill a hole through the 2 lids.

Step 3: Fill the jar without the soldier with corn syrup. Stir in green food coloring until you have the perfect shade of green for your slime.

Step 4: Screw the attached lids onto the jar with the green slime; then screw the jar with the soldier onto the other side of the lids.

Step 5: Flip the jars so the soldier is standing up. The slime will flow from the top jar to the bottom jar to cover the soldier. Flip over the jars for the slime to return to the first jar.

Find the Slime Time

How long did it take for the slime to flow from jar to jar? Put the jars in the refrigerator for 30 minutes to see if temperature affects Slime Time.

What Happened?

The corn syrup flowed slowly through the hole and onto the toy soldier because corn syrup has a high viscosity -- liquids with a high viscosity flow slowly.

Ready for something less gooey? Keep reading to learn about becoming a rock hound in fun science projects for kids.

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