billons to billionths
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Billons to Billionths. Presenter: Carrie Persing 6-12 Math Dept. Chair MathScience Innovation Center. “ Nanoscience and technology will change the nature of almost every human-made object in the 21 st Century.” M.C. Roco , R.S. Williams, & P.Alvisatos , 1999. - PowerPoint PPT PresentationTRANSCRIPT
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Billons to Billionths
Presenter: Carrie Persing6-12 Math Dept. Chair
MathScience Innovation Center
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“Nanoscience and technology will change the nature of
almost every human-made object in the 21st Century.”
M.C. Roco, R.S. Williams, & P.Alvisatos, 1999
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The NSF projects that 6 million workers will be needed in the
field of nanoscience and technology.www.nano.gov
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What is a nanometer and why is size and scale important ?
• Nano = dwarf in Greek• It is one billionth of a meter (1 x 10-9)• Properties of materials change at the nano level a. melting point b. fluorescence c. conductivity d. chemical reactivity
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Extremely Large vs. Extremely Small Numbers
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How many grains of salt can fit in a gallon pitcher?
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DESCRIBE A BILLION
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• A million seconds is 12 daysA billion seconds is 31 years
• A million hours ago it was 1896A billion hours ago man did not
exist.
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• One red blood cell can deliver one billion molecules of oxygen.
• There are about 6.2 billion people in the world.
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How tall would a stack of a billion sheets of cardstock be?
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ChallengeIf one story of a building is about 3
meters high how many stories would a billion sheets of card
stock be?
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ChallengeWhat fraction 0f 66,667 stories would one sheet of paper be?
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How many grains of salt can fit in a gallon jug?
1 Pinch =
1 Cup =
1 Jug =
1,000 grains
1,000,000 grains
16,000,000 grains
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How big would a container have to be to
fit one billion grains?
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Fox Elementary School is selling raffle tickets so you buy one ticket. The student tells you
that you now have a one in ten chance of winning a prize.
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A glass is filled with 95 grams of water. If I wanted to make it a 5% sugar solution, how much sugar
must I add?
watergsugarg.95.5
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How did I make this a 10% solution out of water and food
coloring?
partswaterloringpartfoodco
91
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SCENTED SOLUTIONS
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Cup 1 has a 10% solution or 1/10 solution
What would be the concentration be for Cup 2?
1/10 of 1/10 = 1/100
* 1 part per ten
1% solution or 1 part per hundred
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Cup Color Scent Concen.1 blue strong 0.1
2 Light blue strong 0.01
3
4
5
6
7
8
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A Nanometer is a billionth of a meter
Well how small is that exactly?
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The earth’s continents drift at about 1 nanometer per second
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The average fingernail grows about one nanometer per second
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There are more nanometers in the palm of your hand than there are cars in the
United States.
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