Tag Archives: Rocks

What are crystals?

Crystals are rocks and minerals in which the atoms or molecules were arranged in very regular patterns as the crystals were formed. Perhaps you think of a crystal as a beautiful gem.  You are partly right.  Diamonds and rubies are crystals. But no all crystals are gems.  Each grain of salt and sugar that you …

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Why does moss grow on the north side of a tree?

Moss likes to grow on the side of the tree that’s shady. One way you can sometimes tell which direction is north in a forest is to see on which side of the trees moss is growing.  Mosses are most often found growing where it is moist and shady.  That’s why moss on trees usually …

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Where did the letter Z come from?

Man first tried to write down his language by drawing pictures of objects on rocks and other surfaces. Some scholars think that in the beginning the letter “Z,” the last letter in our alphabet, came from a symbol the ancient Egyptians used for a weapon. In making the first alphabet, the Semites, who once lived …

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How were the mountain made?

Some high mountains are volcanoes.  Others were made in other ways.  Mountains are created by violent changes in the earth’s surface.  Deep under the earth great forces lift, wrinkle, and more that rocks that make up the earth’s crust. Huge blocks of rocks are pushed, tilted, raised or squeezed into great folds, much like a …

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How are rocks made?

Rocks are found almost everywhere.  Very small rocks are called sand.  Rocks bigger than sand have other names, like pebbles, or stone.  Big rocks are called boulders.  In fact, almost all the earth – the mountains and the ground itself – is made of rock. Rocks are made of minerals.  A few are made of …

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What is a shooting star?

Shooting stars are tiny meteors that glow white hot when they hurtle from out of space into the earth’s atmosphere. If you look up at the sky long enough on a dark, clear night, you may see the fiery streak of a “shooting star” flash across the sky. While “shooting star” may be a pretty …

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