Why Are Beach Pebbles Round?
Why Are Beach Pebbles Round? The pebbles that are to be found on a beach are invariably round and smooth owing to the constant battering they have received from the...
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Where Would You Find Pearls?
Where Would You Find Pearls? Pearls come from mollusks – a group of marine animals which includes squids, clams, and oysters. These beautiful round jewels are the...
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How Do Oysters Make Pearls?
Most jewelry is made from precious stones, mined from the earth. But pearls are formed inside the shells of creatures known as pearl oysters. Pearls are made of the...
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How Do Mirrors Work?
How Do Mirrors Work? Most mirrors are made of a sheet of polished glass with a thin coat of silver paint on the back. The silver backing reflects the light that falls...
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Why Is Ice Slippery?
It is hard to walk on ice because its smooth, frozen surface causes you to slip. Ice is slippery not only because it is smooth but also because it melts under the...
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