Science Projects for Kids: Nutrition and Health

Sugar Buzz

Have you ever noticed that if you eat a lot of candy or other food that contains sugar, your head feels a bit odd or achy? Some people call this a sugar buzz. When you get a sugar buzz, it puts your body to work, removing the sugar from your blood. And when all of the sugar is removed, you feel hungry again.

Starches, though, don't rush into the blood as quickly as sugar does -- carbohydrates are absorbed into the blood at different rates. Here's an interesting project that demonstrates this idea.

What You'll Need:

  • 2 glasses
  • Corn syrup
  • Red food color
  • Measuring spoon
  • Sugar
  • Flour

Step 1: Fill two glasses halfway with corn syrup.

Step 2: Add two drops of red food color to each glass to make artificial blood.

Step 3: Place 1 teaspoon of sugar on top of the liquid in one glass and 1 teaspoon of flour on top of the liquid in the other glass.

Step 4: Watch how long it takes for the liquid to absorb the sugar and flour.

What Happened?

Sugar is made of small molecules that dissolve faster than the large starch molecules in flour, so sugar is absorbed faster than the flour. When we eat sugar, these small molecules quickly pass into our blood. When we eat starches (such as something made from flour) the molecules take longer to pass into our blood.

You may have been taught that it's not nice to spit, but keep reading science projects for kids: nutrition and health to find out about a project that encourages spitting. (It's okay -- it's for science.)

For more fun and exciting science projects, check out: