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Posts tagged water

July 21, 2017

 

The tension of water molecules creates a surface that water striders can walk on.

Water Surface Tension

The molecules at the surface of a body of water make a film under tension.

March 7, 2017

 

Contrails from airplanes like these over Bergen, Germany are formed when water vapor condenses around exhaust particles

Airplane Contrails

Why do airplanes sometimes leave long white contrails behind?

February 28, 2017

 

Paper towels are made up of cellulose fibers, which also make up wood, cotton, and many other plants.

How Do Paper Towels Absorb Water?

You've seen TV ads lauding the slurping powers of paper towels; while we won't make any exorbitant claims about them, we're going to discuss how they work.

February 23, 2017

 

Fogbow spotted off the coast

A Rainbow’s Ghostly Cousin

Fogbows are created in much the same way as normal rainbows are. The main difference is the size of the water droplets which affect the light's refraction.

December 12, 2016

 

An image of Ceres with a bright spot, transmitted by Dawn, edited by Stuart Rankin.

The Bright Spots of Ceres

Even though it's three times as far from the sun as Earth, Ceres may have liquid water.

November 1, 2016

 

Camels also use their heavy fur to stay cool.

Camels

A camel draws on a whole range of adaptations so that it can travel hundreds of miles, over several days, without stopping to drink.

October 19, 2016

 

In plants, there is still not much known about how electrical and/or chemical signals get sent to their motor cells.

Plants in Motion

Is your houseplant moving or is that just an optical illusion?

August 3, 2016

 

Remember to cool off your soup so it is safe to eat!

Soup’s Ready!

Why does blowing on hot soup help to cool it off? The answer is evaporation.

July 27, 2016

 

Older airships, like this US Army one from 1922, flew using hydrogen.

A Science Joke: Hydrogen

Why is it that you can't put down hydrogen gas? Find out on this Moment of Science.

July 8, 2016

 

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Charming Fahrenheit

Fahreinheit is based on Earth's range of temperatures where the median falls at zero degrees.

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