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Posts tagged sand

November 23, 2012


shell mixed cement

Pouring Foundations Under Water

Today's program explores how concrete foundations set underwater.

March 28, 2012


child underwater holding breath

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


Christmas tree on the curb

What Should You Do With Your Old Christmas Tree?

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

September 28, 2010


ocean waves

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


Beach with pink sand

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


Black volcanic sand beach

The Geology of Sand

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

October 6, 2008


Beach and ocean

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


Moving Sand Dunes

Singing Sand Dunes

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

July 10, 2007


Hourglass with blue sand

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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