Bubbles! (#15)
Why are bubbles always a round shape? Can you make bubbles to be different shapes?
Bubbles are made from a thin film of soapy water filled with air. The soap film creates a flat plane on a bubble wand. This flat surface has the smallest surface area but with zero volume of air. When you start blowing air in that soapy film, the liquid soapy skin starts to stretch and expand outwards to form a sphere. This creates a surface tension or tightness in the bubble skin, and it tries to shrink the bubble into a shape with the smallest surface area for the volume of air in it. Thus it takes the shape of a sphere and we have round bubbles.
Whatever shape bubble wand you use you’ll always get a spherical bubble.
CAN YOU MAKE A SQUARE BUBBLE?
Materials:
- Pipe cleaners, straws, plastic linking straws - to make a square frame
- Strong bubble mix - water, soap, glycerine
Here is a video!
WHY DOES THIS HAPPEN?
The soap film sticks to all six sides of the cube, the bubbles on the side push against the middle bubble giving it corners and sides like a cube. Notice however that the “square bubble” isn’t a perfect square, it’s still trying to become a sphere, therefore does not have straight sides.WHY DO YOU SEE COLORS INSIDE BUBBLES?
Light from the sun contains a range of colors all with different wave lengths. Colors include red, orange, yellow, green, blue, indigo and violet. When the light shines through the bubble film it is reflected and dispersed the light, which splits it into different wave lengths showing all the colors.Children's Activities Related to Bubbles:
- Make bubbles in a bucket with water, soap, and a whisk! Add a few drops of food coloring to make rainbow bubbles.
- Build with bubbles! Set out plastic Lego blocks, little people, and soap suds and let kidos explore.
- Make GIANT bubbles using homemade bubble mix and wands made out of straws and yarn.
- Popping bubbles with different body parts.
- Science experiment to see what bubble solution makes the best bubbles.
- Create your own bubble wand using pipe cleaners.
- Bubble Art. All you need is bubble mix or soap, paint or food coloring, a straw and some paper.
- Bubble Snake Maker:
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