Monthly Archives: February, 2010

How did the moon get its craters?

The moon is the earth’s nearest neighbor.  Even a small telescope brings to view the many craters that pockmark the moon’s rugged surface.  Some are miles wide and thousands of feet deep. Scientists believe that the craters were created by ancient volcanoes and by huge meteors crashing into the moon from space.  Rocky mountains and …

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What are condors and where do they live?

Condors are large, dark vultures that can be found living high up in the remote parts of the California Mountains of North America, and in the higher mountains of South America. A condor may grow to be over 4 feet long and have a wingspread of nearly 11 feet.  It is one of the largest …

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What bird is the greatest traveler?

The arctic tern is the greatest bird traveler.  It migrates farther than any other bird.  The arctic tern is a graceful black and white sea bird with a forked tail and long wings.  During the summer the arctic tern nests in the arctic.  In the fall it begins a long journey to the most southern …

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How does the earthworm dig its burrow?

As we can guess from its name, the earthworm lives in the ground.  It digsits burrow by pushing its way through the soil. To more forward, it grips the dirt with tiny stiff bristles on the tail end of its body.  Then it stretches its body forward.  This action pushes the need through the dirt. …

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Where does tapioca come from?

Tapioca is a food starch that comes from the roots of the manioc, or cassava, shrub which grows in the warm lands of the world. Tapioca pudding is a desert that many people like.  Tapioca is made from the thick, starchy roots of a large shrubby plant which grows in Brazil and other warm countries. …

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How do oysters make pearls?

Pearls are formed when a grain of sand or other irritating object gets inside the shell and the oyster coats it with layers of pearl. Most gems are found in rocks.  But pearls are found inside the shells of oysters and other shellfish.  Most pearls come from pearl oysters, which live in warm seas. Pearls …

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Why is the ocean salty?

Sea water contains all the natural elements that make up the minerals in the earth’s crust. The most common of the minerals found in the ocean is common table salt, which is mainly responsible for the salty taste of sea water.  In fact, the average gallon of seawater contains about a quarter of a pound …

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Why do onions make my eyes water?

Onions contain a mildly stimulating oil.  This oil readily forms a vapor (gas) which escapes when the onion is cut.  It not only gives the onion its sharp odor, but also irritates the eye.  The eye reacts by producing a flow of tears to wash away the pungent stuff the onion gives off. When you …

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Kidney patients getting younger

Lessen your child’s soft-drink intake. More Filipinos are becoming sick with end-stage renal disease.  And more and more of them are undergoing dialysis because their kidneys have stopped doing their job:  to clean the blood of toxins. Remedies Uriarte, M.D., of the Philippines Renal Disease Registry, says that since the registry started noting down the …

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