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Bubble Prints Experiment

When two bubbles meet, they will merge walls to minimize their surface area. If bubbles that are the same size meet, then the wall that separates them will be flat. If bubbles that are different sizes meet, then the smaller bubble will bulge into the large bubble. Bubbles meet to form walls at an angle of 120°. If enough bubbles meet, the cells will form hexagons. You can see this structure in the images you make in this project.   The forces acting between the molecules of the bubble cause it to form the shape that encloses the most volume…

Atmospheric pressure Mat Experiment

The atmospheric pressure mat is approximately 10.5 x 10.5 inches and it does not let air under it when pulled straight up because of a tight seal between the rubber and surface.   There is approximately 1620 lbs of pressure pushing it down from the air mass above it and as long as no additional air can get under the mat it can theoretically lift that much pressure. In reality, it’s much less because of the imperfect seal between the mat and object and the small quantity of air under the hook.   As you pull up on the hook,…

AIR Cannon (Airzooka) experiment

The air cannon also known as the“vortex generator” is one of my all time favorite experiments. The air that shoots out of the cannon makes a vortex of air that is generated because the air leaving at the center of the hole is traveling faster than the air leaving around the edge of the hole. The air around the edges takes longer to get out of the can.   Wouldn’t be cool if we could see the vortex and it shot out of the cannon? Well we can and this is where this experiment becomes really cool. Fill the cannon…

Pop a balloon that is inside another balloon Experiment

The power of the sun. Don’t blink or your going to miss this one. Why does the inside black balloon pop before the outside clear balloon pop when using a magnifying glass? The clear balloon has most of the light pass through it like a window, but the black balloon surface that doesn’t reflect any light… it absorbs almost all of it. With a surface absorbing all of that light, it also absorbs the energy. In this case, that energy is heat, and a lot of it. The heat absorbed by the black balloon from the focused sunlight quickly causes…

Soda Can Jump experiments

Soda can Launch! Kids will love this hands on experiment. See how far you can launch your soda can? Blowing air in between the can and the coffee cup creates an area of high pressure between the bottom of the can and the inside of the coffee mug. The harder you blow, the more rapidly the air pressure between the surfaces increases.  

Air Pressure Can CRUSHER Experiment

What caused the can to collapse? Before we started the can was filled with water and air. When we heated the can it caused the liquid to turn to gas (Vapor) when the water boil. The vapor from the boiling water pushed air out of the can. Now the can is filled with water vapor, we cooled it suddenly by inverting it in water. Cooling the can caused the water vapor in the can to condense, creating a partial vacuum. The extremely low pressure of the partial vacuum inside the can made it possible for the pressure of the air…

Balloon in a bottle Science Experiment

When I first tried to inflate the balloon it was impossible. This was because the bottle is enclosed and inside air already occupied all the space. So when we tried to blow up the balloon there was no room for the balloon to inflate and grow.   The second time I tired to blow up the balloon the balloon inflated and easily expanded. This occurred because the air inside the bottle was pushed out the exit hole as the balloon inflated. When I placed my thumb over the hole once the balloon was inflated it stayed that way because we…

Bernoulli Blaster Experiment

This experiment awesome way to demonstrate the unexpected effects of low air pressure with an leaf blower. A fast stream of air across the top of this clear tube lowers the air pressure in the tube. As a result, high air pressure below the tube propels the ping-pong balls upward in the tube, in apparent defiance of gravity! The balls are pushed up the tube right into the stream of the leaf blower and off they go.  

Marsh Mallow CRUSHER! (FIZZ-KEEPER PUMP)

Pumping the Fizz-Keeper forces molecules of air into bottles, just like inflating a tire. While marshmallows are present in the bottle, this increased air pressure makes the marshmallows shriveled, wrinkly, and shrink. Why? Well, it’s because marshmallows are just sugar and air. In fact, marshmallows are comprised of about 40-60% air. When you increase the air pressure inside of the bottle beyond the regular pressure outside, the force actually crushes the marshmallow’s air pockets.   You can use this demonstration to discuss the effects of atmospheric pressure. We sometimes refer to things as being “light as air,” but the truth…

Two Balloon Experiment

Two identical balloons are inflated to different diameters and connected by means of a tube. A valve controls the flow of air through the tube.   Guess what will happen when I open the valve? a) The smaller balloon will get bigger b) The smaller balloon will get smaller c) The balloons will become the same size   When the valve is opened, this allows air to flow between the balloons. The smaller balloon then gets smaller and the larger balloon inflates even more. This result is surprising, since most people assume that the two balloons will have equal sizes…

Coanda effect Experiment

When you blow into the square jug, the air has to change direction and it will follow the surface until it hits a sharp corner, at which point the flow will tend to separate from the surface of the square jug and carry on off to the sides as seen in the video.   On the other hand you blow at the circle bottle, the air will tend to stick to the surface even as the surface curves, this is called the Coanda effect. This way the air curves all the way around the circle bottle, and can blow out…

Floating Plate & Glasses experiment

When the matches burn inside the glass, the air inside the glass warms. Warm air takes up more space than cool air. As the air inside the glass gets warmer, it expands and pushes against the sides, creating higher air pressure inside the glass than outside the glass. To restore the balance, some of the high pressure air inside tries to move towards the lower pressure air outside.   The matches burns in a combustion reaction. For the matches to stay a light, it needs a constant supply of oxygen. However, when the matches is trapped in the glass, it…

Water Balloon in a Bottle Experiment

Awesome summer experiment. To set this experiment up you need to put a small whole in the bottle of the bottle. I used a one liter bottle, but you can use any bottle. I used a nail to put the whole in the bottle.   Then put the balloon in the top of the bottle and starting blowing up the balloon. When you ready to stop cover the whole with one of your fingers. Now the balloon will stay blown up. If you don’t put a whole in the bottle then you won’t be able to blow up the balloon….

Keeping Paper Dry Underwater Experiment

Atmospheric pressure is a considerable force we rarely notice. That’s because air exerts its pressure on us equally in all directions. At sea level, one cubic metre of air weighs around 1.2kg which is roughly the same as a litre of milk. Gravity keeps us and our atmosphere firmly stuck to the Earth but air is a fluid that flows readily, allowing us to move through it with ease. At low speeds it provides few clues of its presence to our senses. Only when we pace through it at speed, or when huge bodies of air get moving as wind…

How to build a Helicopter with pencil Experiment

I made the paper with thick card stock paper. 4 inches (10cm) by 2 inches (5cm). Bend the paper on two slides down. You can try bending the paper shorter or longer to see if you get a better lift.   When you spin the piece of card, it moves through the air like a wing. As the air hits the flaps, it is forced downwards. Isaac Newton worked out that if you push something one way, it will push you back; so the card pushing the air downwards means that the air pushes the card upwards.   Essentially you…

Ping Pong ball & Atmospheric Pressure experiment

To start, the bottle is filled about 2/3 full. You can hold the ball on top of the bottle and dip the bottle upside down and then bring it back up right side up. Now try to slow tip the bottle sideways to seal the ball to the bottle.   If this does not work then hold the ball with your fingers against the glass and the bottle tipped up. and tip it upside down. Hold the ball loosely against the glass so that water is allowed to leak out. Eventually the air pressure inside the bottle falls to a…

Expanding Ping pong ball Experiment

1) If you don’t have aa ping-pong ball with a dent or indentation in it, then use your thumb and make a small indentation. 2) Then place ping pong ball in a galls nearly full of water. 3) Turn on microwave for 1 minute 4) Using a oven mit remove the glass. Be careful as the water will be very hot. Remove ping pong ball and Observe.   Science behind this experiment As the ping pong ball is heated, the air inside will be heated as well. As the molecules of air are heated, they will begin moving faster. AS…

Deflated Balloon experiment

1.) Fill 2 liter bottle to the brim with water 2.) Place a deflated balloon over the mouth of the bottle 3.) Poke a small hole in the side of the bottle, bear the base, with a nail 4.) Observer the behavior of the balloon 5.) Lift the balloon up into the air and pull up on it several times until it gets pushed down into the bottle. Observer the distance the water travels through the hole as you are dong this. 6.) Once the balloon is inside the bottle and completely inverted, blow air into it to inflate it….

BAKING POWDER SUBMARINE EXPERIMENT

Here’s how to make your own Baking Powder in less than a minute. 1 teaspoon baking soda 1 teaspoon cream of tartar   Mix both together and you have Baking Powder.   After you get your submarine ready, put some Baking powder in the bottom and let it sink to the bottom.   The baking powder will come in contact with water, which will in turn cause a chemical reaction. This reaction will produce air bubbles along the bottom of the potato, causing it to rise back to the surface. When the submarine gets to the surface, the bubbles will…

Centrifugal sprinkler (Sprinkler Straw) Experiment

Centrifugal sprinkler this is a very fun and messy Hands-on experiment (physics, mechanics, inertia, centrifugal force, pump). A straw and a skewer can turn into a pump with a twist of your fingers! Once you have secured anything you want to stay dry, this fun experiment is a good way to introduce centrifugal forces and the principle behind many pumps.   When you spin the straw it forces the water inside to spin. If an object is spinning anything on that object appears to feel a force pushing it outward.   This means that in your straw the water is…

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