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 It's a Small, Small World: Nano Numbers

It's a Small, Small World: Nano Numbers
Reading Level
     edHelper's suggested reading level:   grades 5 to 7
     Flesch-Kincaid grade level:   6.14

Vocabulary
     challenging words:    bulletproof, indestructible, nano, nanocreations, nanometer, nanometers, nanostructures, nanotechnology, nanotube, microscopic, naked, microscope, strand, prefix, carbon, dwarf

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It's a Small, Small World: Nano Numbers
By Joyce Furstenau 		  
1     
Nano is a prefix that means "dwarf." It's from the Greek.
It's a tiny, tiny number when about its size we speak.
One billionth of a meter is a nanometer's size.
We can't see a nanometer with our naked eyes.

 
2     
Something that is nano size is very, very small.
We must use a special microscope to see anything at all.
If a million nanometers were lined up in a row,
it would be about the size of a single flake of snow.

 
3     
A single human hair is around 40,000 nanometers thick.
A hundred nanometers is the size of a germ that makes you sick.
One strand of human DNA is about two nanometers wide.
One inch is 25.4 million nanometers sitting side by side.


Paragraphs 4 to 5:
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