toddvinn3h8h
Dołączył: 28 Gru 2010
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 Wysłany: Wto 11:10, 19 Kwi 2011 Temat postu: Amazing Atoms |
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kids, here's some science amusement to try in your kitchen: take a piece of edible, like cheese, and cut it in half. Then you take one half, and cut it in half again. And anew. And again. Eventually, if you keep cutting, you'll all over with a chip that's also small to cut anymore. There is no knife keen enough to do it!
Scientists have been doing experiments like this for thousands of years,[link widoczny dla zalogowanych], and a male in antique Greece named Democritus figured out that each unattached object in the macrocosm - from the planets, to your lunch, to the clothing you're dressing, to you must be made up of tiny particles that can't be mow anymore. He called these particles "atoms", which in Greek means "uncuttable".
Think of building a house out of blocks or Lego bricks. If you look closely at the house, you can see that it's made up of different kinds of bricks. One kind makes up the roof, one kind makes up the walls, another makes up the windows. By combining different blocks in different ways, we could build nearly anything we can assume.
Atoms are like those mansion blocks. There are over 100 assorted varieties of atoms, and at putting them together in different ways, we tin make everything in the universe!
Atoms are so tiny that we can't watch them, even with the most powerful microscope aboard the planet. But scientists have been act experiments as thousands of years to diagram out what atoms looks favor,[link widoczny dla zalogowanych], and we know now thatthere are 2 parts apt an atom. At the centre of the atom namely a huge kernel shrieked a nucleus, which namely made up of motes shrieked protons and neutrons. Whizzing nigh that kernel at incredible speeds are tiny molecules called electrons, favor moons orbiting a gigantic planet. But electrons are what make the earth go the path it does.
Electrons are exceedingly small. You could fit 2000 of them into one proton. That means whether the nucleus was the size of a coconut, one electron would be smaller than a grain of rice! But what's even more unbelievable is that if we were to construct a scale prototype of an atom, and accustomed a coconut to characterize the nucleus,[link widoczny dla zalogowanych], we would have to put the electrons 500 metres away! That's a distance of almost 5 football fields!
So what does that mean? Most of an atom is empty space. The chair that you're sitting on, the microprocessor you're using to read this, even your own body, is mostly empty space. The reason it seems solid is for of those whizzing electrons.
Think of the spinning blades of a fan. You can't pass your finger through a fan without obtaining ache, because the blades whirl so quick that they act like a solid, even although there's space between them.
Electrons work the same way. They shake around the nucleus so fast that even though most of the atom is empty space, it acts like a solid!
So next time you draw a picture, alternatively jot a poem, or make something out of clay, take dissimilar see at it and remember: that's beautiful amazing for someone who's mostly made of vacant space!
Discover more kids science treatises,[link widoczny dla zalogowanych], look up amazing fun facts, do animated science quizzes with talking symbols, encounter friends in virtual worlds,[link widoczny dla zalogowanych], play games and do fun science activities at Science Score the world's most fun online elearning product for kids. Join the thousands of kids to play with Science Score and do well in Science. Visit
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