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Posts tagged friction

December 30, 2010

 

What Happens When Machines Jam?

There is a lot of physics behind machines. Why do machines jam and what is done to prevent them from breaking?

December 23, 2010

 

Why Should You Change Your Car’s Oil?

It can be a pain but changing your car's oil is very important!

June 21, 2010

 

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

 

Kinetic energy means the amount of motion the molecules in the nail have, or how much they jostle against each other. To produce more heat, start jostling those molecules again after they've calmed down. You won't ever run out of heat.

What Is Heat?

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

November 20, 2009

 

Why Ice Is Not Slippery

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

July 17, 2009

 

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

 

What Are Calluses And How Are They Formed?

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

June 17, 2008

 

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

 

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.

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