Knowledge Nugget–September 23

Today is KidzWorld Watermark so try doing this cool water experiment that teaches capillary action. You need 3 simple items you have in your kitchen.

Escaping Water

What you need
a glass of water
an empty glass
paper towels

Steps
1. Twist a couple of pieces of paper towels together until it forms something that looks like a piece of rope, this will be the ‘wick’ that will absorb and transfer the water.
2. Place one end of the paper towels into the glass filled with water and the other into the empty glass.
3. Watch what happens (this experiment takes a little bit of patience).

What’s happening?
Your paper towel rope (wick) starts getting wet, after a few minutes you will notice that the empty glass is starting to fill the water, it keeps filling until there is an even amount of water in each glass, how does that happen?

This process is called ‘capillary action’, the water uses this process to move along the tiny gaps in the fiber of the paper towels. It occurs due to the adhesive force between the water and the paper towel being stronger than the cohesive forces inside the water itself. This process can also be seen in plants where moisture travels from root to the rest of the plant.

We would love to hear what you discovered from this experiment by leaving a comment.

 

Experiment credits kids-science-experiements.com

Knowledge Nugget–September 20

Mac n’ cheese did not always come in a box.  In the 14th century it was made with hand-cut pasta sandwiched between a mixture of melted butter and cheese. Make Cosmo’s favorite mac n’ cheese recipe for dinner tonight with your family.

Believe it or not but back before the 18th century macaroni and cheese was considered an upper-class dish.

Cosmo’s Favorite Mac n’ Cheese
(serves 4)

Ingredients:
2 C. dried elbow macaroni (or your favorite variety of pasta)
2 Tbsp butter or margarine
2 Tbsp. flour
1/2 tsp. salt
1/8 tsp. pepper to taste
2 1/2 C. milk
10 slices of American cheese
1/2 C. crushed Ritz® crackers or Goldfish® crackers

Directions:
1. Cook macaroni according to package directions.
2. Meanwhile, for cheese sauce, in a medium saucepan melt butter over medium heat. Stir in flour, salt and pepper. Add milk all at once. Cook and stir over medium heat until thickened and bubbly. Add cheese slices, stirring until melted. Stir in cooked macaroni. Transfer mixture to a 2-qt casserole. Sprinkle crushed crackers on top.
3. Bake, uncovered, at 350 degrees for 25-30 minutes.

Short on time? Skip the crackers and omit the baking step.

Fun fact: In other countries macaroni and cheese is called “macaroni pie” because it is cooked like a casserole.

We would love to hear how your batch of Cosmo’s Mac’ n Cheese turned out by leaving a comment.

Recipe provided, tested and loved by KidzWorld
Information on macaroni and cheese from Wikipedia