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Posts tagged sand

November 23, 2012

 

Have you ever seen workers mixing cement under water?

Pouring Foundations Under Water

Today's program explores how concrete foundations set underwater.

March 28, 2012

 

Don't worry... there is plenty of Oxygen.

How Much Breathable Oxygen Gas Is There In The Atmosphere?

I have a friend who says there's not much oxygen on earth. Ever since I heard that I can't catch my breath! What's the truth?

December 31, 2010

 

Instead of throwing away your old Christmas tree, try recycling it!

What Should You Do With Your Old Christmas Tree?

Christmas is over but what should you do with your Christmas tree?

September 28, 2010

 

Why Do Ocean Waves Sound The Way They Do?

What is the distinctive sound of the ocean hitting the sand: Woooosh!

May 20, 2010

 

Why Does Wet Sand Stick Together?

Why does wet sand stick together to form sand castles and dry sand falls apart?

February 3, 2009

 

The Biology of Sand

Many ocean-going life forms draw calcium from the water around them, and use it to secrete a hard exoskeleton, seashells for example.

February 2, 2009

 

The Geology of Sand

Most grains of sand originally started as part of a larger rock.

October 6, 2008

 

Glass Beaches

Florida has begun using glass as sand at the beach as a way to keep its shores friendly to both tourists and wildlife.

March 12, 2008

 

Singing Sand Dunes

Do sand dunes make noises? Find out on this Moment of Science.

July 10, 2007

 

The Ticking of the Hourglass

Aw, the ticking of the hourglass. Ticking hourglass? Clocks tick. Hourglasses flow. Are we mixing our metaphors? Learn more on this Moment of Science.

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