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Bernoulli’s Principle Ping-Pong Ball Air Pressure Science Experiment

Try this outrageously fun ping pong ball air pressure experiment that will demonstrate Bernoulli’s Principle for kids. This ping pong ball science experiment is perfect for preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade,a nd 6th grade students. All you need for this¬†ping pong ball funnel air pressure¬†are a couple common household items. So WOW kids with this¬†bernoulli’s principle ping-pong ball experiment in your lesson today!

Try this outrageously fun Ping Pong Ball Science Experiment that will demonstrate air pressure with a bernoulli's experiment. This air pressure experiments is perfect for pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade,a nd 6th grade students.   

Ping Pong Ball Experiment

Kids will be super impressed by this¬†Ping Pong Ball Science Experiment that will teach about¬†air pressure for kids. To be fair, this experiment does not ACTUALLY defy gravity. (Anti-gravity is really just science fiction.) However this bernoulli’s experiment definitely APPEARS to defy gravity. By combining this “anti-gravity” experiment with a couple other simple experiments involving a Ping Pong Ball Experiment, kids will not only be amazed and impressed, but will learn a little about the science of air pressure as well. This is such a fun¬†science experiment for kids from kindergarteners, grade 1, grade 2, grade 3, grade 4, grade 5, and grade 6 students. Whether you are a parent, teacher, or homeschool, this fun science project is a fun way to teach kids with a¬†bernoulli’s principle experiment. Use this at home, in the classroom, or as a supplement to your homeschool science curriculum. Either way, this

Ping pong ball science experiment

The basic concept that kids will discover when doing these experiments is that flowing air seems to pull a light object such as a ping pong ball away from still air. The reason for this is that moving air has a lower air pressure than air that is not moving. Kids that have a basic knowledge of forces and pressure will understand that an object between a region of low pressure and high pressure will feel a force moving the object away from the high pressure and towards the low pressure.

Kids desiring an even deeper understanding of this phenomena can be taught Bernoulli’s equation.

Bernoulli's-Equation

Bernoulli’s experiment

This equation is only valid for incompressible fluids, meaning fluids with constant density.

Bernoulli’s equation mathematically explains the relationship between pressure, velocity, and elevation. From this equation, it becomes clear that when velocity increases, pressure must decrease. By thinking about where the regions of low pressure and high pressure are in each of these experiments, kids can actually predict the way the ping pong ball will behave. However, without going through this process, the movement (or lack of movement) of the ping pong ball seems completely counter-intuitive.

With the 5 supplies mentioned below, kids can not only perform the anti-gravity experiment, children can also quickly and easily levitate the ping pong ball using a hair dryer and see what happens when they try to blow a ping pong ball out of a funnel.

hair dryer science experiment about air pressure

Bernoulli’s principle experiment

All you need to try this¬†bernoulli’s experiment are a few simple materials you probably already have on hand at home!

  • Hair Dryer
  • Ping Pong Ball
  • Funnel
  • Empty Toilet Paper Roll
  • Duct Tape

 

Air pressure experiments

First, the best way to start is to ask your child if they think they can blow a ping pong ball upward and out of a funnel. My 3.5 and 6 year olds were both completely convinced that they could. Even my husband thought that he would be able to do it. It turns out, this task is basically impossible. The harder you blow, the more the ball is pulled back into the funnel.

Blowing-Ping-Pong-Ball-Out-of-Funnel-Challenge

Ping pong ball air pressure experiment

The reason for this is that the air flows through the funnel and around the bottom half of the ball, creating a region of low pressure that effectively sucks the ball into the funnel.

The anti-gravity experiment uses this same phenomena, but with the powerful, consistent flow from an air dryer, the funnel can be held upside down and STILL hold the ball inside the funnel. To start, tape the funnel onto the blow dryer using the toilet paper roll and duct tape as shown.

Attach-Funnel-to-Blow-Dryer

Ping pong ball science experiment

Next, turn the blow dryer on high with the heat on low (or use the “cool” button). Place the ping pong ball inside the funnel and slowly start turning the blow dryer upside down. Most modern blow dryers should have enough air flow to be able to hold the ball in place within the funnel even when the funnel is completely upside down.

Anti-Gravity-Ping-Pong-Ball

Ping pong ball experiment

If before doing this experiment you ask the child (or most adults) what they think will happen, nearly everyone will assume that the blow dryer will blow the ball out of the funnel, especially when the funnel is upside down. However, with the high flow near the funnel-side of the ball and the stagnant air on the far side, the pressure difference is enough to counteract the force of gravity.

Lastly, since you will already have a ping pong ball and blow dryer handy, do the ever-popular floating Ping-Pong ball trick. Simply place the ball inside the column of air flow and watch it hover in space.

Levitating-Ping-Pong-Ball

Bernoulli’s principle ping-pong ball experiment

Depending on the strength of your blow dryer, you may even be able to tilt the blow dryer slightly and still keep the Ping-Pong ball from falling. The stability in this experiment comes from the fact that the fast moving column of air from the blow dryer is at lower pressure than the surrounding still air. As the ball starts to fall to one side, it is pushed back into the column of air due to the pressure difference. Even preschoolers with steady hands can perform this trick on their own.

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About the author

Beth Gorden

Beth Gorden is the creative multi-tasking creator of 123 Homeschool 4 Me. As a busy homeschooling mother of six, she strives to create hands-on learning activities and worksheets that kids will love to make learning FUN! She has created over 1 million pages of printables to help teach kids ABCs, science, English grammar, history, math, and so much more! Beth is also the creator of 2 additional sites with even more educational activities and FREE printables - www.kindergartenworksheetsandgames.com and www.preschoolplayandlearn.com

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