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pressure

You’ve Got One Tonne of Air Pressing Down on You, the Same as a Small Car
Image: istockphoto/kzenon

You’ve Got One Tonne of Air Pressing Down on You, the Same as a Small Car

There's no getting away from pressure, but would you want it any other way? Find out what would happen if you were suddenly free of pressure, in space.

Then discover all the important things you can do when you understand the effect of pressure on fluids like water and air: make toilet paper fly, for example.

Physics.org
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Scientist Profile: Engineer

Scientist Profile: Engineer

Lonnie Johnson's inventions include the Supersoaker. Find out how an experiment in his bathroom turned into the most powerful water gun in the world. More...

Profile
DragonflyTV/PBS
Bernoulli Effect

Bernoulli Effect

When the Swiss mathematician Daniel Bernoulli showed, in 1738, that the pressure of a fluid goes down as it speeds up, he didn't realize how much fun people could have with this idea. More...

Video
Dr. Carlson's Science Theater
Bill Nye The Science Guy on Pressure

Bill Nye The Science Guy on Pressure

Bill Nye goes to a lot of trouble to show you that high pressure squashes air into a smaller amount of space. More...

Video
Disney
Air Pressure Can Crusher

Air Pressure Can Crusher

Watch the video before doing this experiment, then follow the instructions carefully since it involves boiling water and may make you jump. To calm down afterwards, read the explanation of what happened. More...

Activity
Steve Spangler Science
Fluid Pressure and Flow

Fluid Pressure and Flow

Change the shape of the pipe in this interactive simulation to see how that changes fluid flow and pressure. More...

Interactive
PhET
Forces and Pressure

Forces and Pressure

Pressure affects solids, liquids, and gases differently. If you are a student facing a test, you will feel less pressure after using this British revision guide (in other words, study guide). More...

Article
S-Cool
How Do Drinking Straws Work?

How Do Drinking Straws Work?

Find out why no one could ever drink through a 35-foot straw, either by reading this resource or pressing play and listening to it. You'll also learn how a barometer works. More...

Article
Indiana Public Media
I Didn’t Know That: Power of Water Pressure

I Didn’t Know That: Power of Water Pressure

News Splash: Under enough pressure, water can push a car, clean a sewer, or cut through cement. More...

Video
National Geographic
Kitchen Science: Water Pressure

Kitchen Science: Water Pressure

Looking for a hands-on activity that shows the nature of water under pressure? With little more than a soda bottle, you can prove that the deepest hydro-electric dams work best. More...

Activity
The Naked Scientists
Pressure

Pressure

Just when you think this is a simple site about pressure, it dives into the math. But it does a good job of it! Follow the links, if you dare. More...

Article
Georgia State University
Quiz: Pressure

Quiz: Pressure

There's no use running off to Australia to escape the subject of pressure. This quiz comes from science teachers there. More...

Interactive
Queensland Science Teachers
Science of Speed: Tires And Pressure

Science of Speed: Tires And Pressure

Tire pressure can mean the difference between winning and losing a NASCAR race. That's why crew chiefs don't give a car's tires the same pressure or fill them with ordinary air. More...

Video
National Science Foundation
Sound Is a Pressure Wave

Sound Is a Pressure Wave

Sound waves travel through liquids, solids, and gases. The sounds we hear come from molecules of air compressing and decompressing as sound waves travel through them. More...

Article
The Physics Classroom

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