A Moment of Science

Posts tagged friction

June 21, 2010

 

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Bugs, Dimples, And Walking On Water…

Just how do bugs walk on water? Learn how bugs use their feet and surface tension to walk.

April 22, 2010

 

heat_080

Heat Is A Measure Of Kinetic Energy

Heat was once thought to be a liquid. However, we know know that heat is a measure of kinetic energy.

November 20, 2009

 

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Why Ice Is Not Slippery

Slipping on ice is no fun. But, why is ice, technically, not slippery?

July 17, 2009

 

A group of tires

Waterskiing On The Highway: Why Tires Have Treads

If you've ever driven on a highway during a heavy rain, you know about the danger of skidding. Learn how tire tread works on this Moment of Science.

September 8, 2008

 

skin

What Are Calluses And How Are They Formed?

Have you ever gotten a callus and wondered what is was?

June 17, 2008

 

Using a Dime to create sparks

Flaming Steel

Strike the flint and steel together to make sparks, then use those sparks to start your flame. Learn more on this edition of Moment of Science.

August 2, 2007

 

Pumping up flat tire

Flat Tires and Diesel Engines

As you fill a flat tire from your hand pump, you notice parts of the pump getting hot. Why would the pump get hot with all that cool air flowing through it?

January 2, 2006

 

Zoom!

You’re out on a clear, starry night with your best friend, looking for shooting stars. Look, there’s one, your friend shouts, but by the time you look, it’s gone. There’s another, she cries. Too late, you missed it. Then one comes along that seems to just amble across the sky, nice and slow. Why is it that some shooting stars are so fast and others are much slower? Learn more on this Moment of Science.

December 6, 2005

 

a pile of hacky sacks

The Little Ball That Couldn’t

There are some balls that are specifically designed not to bounce. The question is, how do these so-called 'dead balls' not bounce?

December 1, 2005

 

Physics of the Fall

Skydiving has become an increasingly popular sport, although most of us haven’t yet taken the plunge and only enjoy it from the sidelines. If you’ve seen video of skydivers in action, especially skydiving teams that link up to create formations, you might wonder how they do it. It’s a matter of elementary physics. Learn more on this Moment of Science.

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