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Bernoulli's Principle
Kristen Hibbard from the Challenger Learning Center in Bangor joins the TV5 morning news to talk about Bernoulli's Principle.
Experiment credit: https://www.massaudubon.org/get-involved/citizen-science/firefly-watch/view-explore-data
Materials Needed:
Empty Soda Can / two coffee mugs [similar size works best]
Make a Soda can Jump-Open and empty the contents of a soda can. Place two mugs next to each other. Place the empty soda can in one of the mugs. Blow air into the small space between the soda can and the mug. It will jump out of the mug into the second mug. It will take practice and adjusting the distance between the mugs to get a slam dunk!
Air pressure (Bernoulli's principle) is the magic that makes the soda can jump. Blowing between the soda can and the mug changes the speed of the air and thus the air pressure. The air pressure above the can, meanwhile, stays constant. Once the pressure difference becomes large enough, the can will make it jump out of the mug!
This activity ties into the Challenger Learning Center of Maine: Challenger holds STEM camps all summer long for entering grades K-8. We discuss forces of flight and many more activities during camp days filled with science and innovation.
For more information, visit www.astronaut.org.
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Activity Overview
Kids of all ages will enjoy the fun invisible force called air pressure that can make a soda can jump from one mug into the other! Young scientists and their observers will not want to miss this fun hands on experiment.
Fast moving air creates an area of low pressure, so when you blow air into the space between the can and the mug, it lowers the pressure on the outside of the can. The harder that you blow, a lower pressure environment is created while the air pressure underneath the can stays the same. This vast difference in air pressure causes the can to pop right up out of the mug. This bit of family-friendly science is based on Bernoulli's Principle.
Materials Needed
- 1 empty soda can
- 2 coffee mugs
How To Do It
- Place one mug in front of the other mug.
- Place one soda can face up inside the mug closest to you.
- Blow air into the space between the mug and the soda can which will cause the can to "jump" into the other mug.
- You may need to adjust the mug distance as necessary.
Have fun with great ideas on things to do for travel, daytrips, nearby, or at home...
Uncanny Motion
On a flat tabletop, arrange two empty cans so you can blow between them. Depending on one small detail, the cans either move apart or come together.
- Two empty soda cans
- Flat tabletop
None needed.
Place the cans side by side on a table, parallel to each other and about an inch (2.5 centimeters) apart. Make sure they can roll easily. Now blow straight downward between the two cans (see images below). What happens?
Now try again, but this time, place the two cans on top of two parallel straws. The straws should be arranged perpendicular to the cans and parallel to each other, about 2 inches (5 to 8 centimeters) apart. Blow down between the cans and watch what happens now (see images below).
The cans move apart when placed directly on the table, but move together when resting on the straws. Why?
When you blow down between the cans that are resting on the tabletop, the air is trapped between the cans. As you blow, the pressure between the cans builds up, becoming higher than the pressure on the outside of the cans. This higher pressure forces the cans apart.
Putting straws under the cans allows air to escape beneath the cans. As the air is blown downward, it passes between the cans and gets constricted, speeding up as it squeezes between the cans. When air speeds up, its pressure dropsāso says Bernoulliās Principle. Since the atmospheric pressure on the outside of the cans is higher than the pressure between the cans, the cans roll together.
Try other arrangements of the cans and see what happens. For example, place the cans on the tabletop, as in the first arrangement, but instead of blowing from the top down (vertically), blow between the cans, horizontally, as shown in the photo below. Blow so that your airflow passes along the length between the two cans. Give a good strong burst or puff of air.
Engineers and designers have to take these kinds of pressure differences into account when designing buildings, vehicles, aircraft, and even musical instruments.
This is a great introductory activity for teaching about fluid dynamics and pressure, and for launching a host of design challenges.
Turn this activity into a data-collecting experiment: How far apart can you position the cans and still make them roll togetherā¦or apart?
Related Snacks
Hands-On Wednesday: Jumping Soda Can
Most people drink the occasional soda, but have you ever seen a soda can jump before? After you drink your next soda, place the empty can in a coffee mug, then blow into the space between the mug and can. The increase in air pressure between the two surfaces causes the soda can to jump out of the mug. Once youāve mastered that, try setting up a second mug and see if you can get your can to jump from one mug to the other!
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COMMENTS
The best part is that you only need a beverage can and one or two mugs! This simple science experiment is typically done with soda cans just because soda is a beloved drink that people have around the house. But you can do this with any beverage can.
The Soda Can Jump is a super simple and easy science activity with only an empty soda can and a mug. You will find that you can fly a soda can by just give is a blow.
Can Soda Cans Jump? š¤āļø #DiscoverEAtHomeIn the Soda Can Jump experiment, šØš¬Brett shows you how differences in air pressure can make a soda can jump from ...
Hello and welcome to LAB 360! Today we're here with with this amazing science experiment called the "Soda Can Jump" So sit back and enjoy!
Air pressure (Bernoulli's principle) is the magic that makes the soda can jump. Blowing between the soda can and the mug changes the speed of the air and thus the air pressure.
Air pressure (Bernoulli’s principle) is the magic that makes the soda can jump. Blowing between the soda can and the mug changes the speed of the air and thus the air pressure.
Kids of all ages will enjoy the fun invisible force called air pressure that can make a soda can jump from one mug into the other! Young scientists and their observers will not want to miss this fun hands on experiment.
Home. Science Snacks. Uncanny Motion. Blowing between cans makes them roll in mind-blowing ways. On a flat tabletop, arrange two empty cans so you can blow between them. Depending on one small detail, the cans either move apart or come together. Tools and Materials. Two empty soda cans. Two straws. Flat tabletop. Assembly. None needed.
Explore air pressure by trying out this simple experiment where you can make a can jump without using your hands.
After you drink your next soda, place the empty can in a coffee mug, then blow into the space between the mug and can. The increase in air pressure between the two surfaces causes the soda can to jump out of the mug.