IT’S A NANO WORLD Learning Goal
• Nanometer-sized things are very small. Students can understand relative sizes of different small things
• How Scientists can interact with small things. Understand Scientists and engineers have formed the interdisciplinary field of nanotechnology by investigating properties and manipulating matter at the nanoscale.
• You can be a scientist DESIGNED FOR C H I L D R E N 5 - 8 Y E A R S O L D SO HOW SMALL IS NANO? ONE NANOMETRE IS A BILLIONTH O F A M E T R E
Nanometre is a basic unit of measurement. “Nano” derives from the Greek word for midget, very small thing.
If we divide a metre by 1 thousand we have a millimetre.
One thousandth of a millimetre is a micron.
A thousandth part of a micron is a nanometre.
MACROSCALE OBJECTS
271 meters long. Humpback whales are A full-size soccer ball is Raindrops are around 0.25 about 14 meters long. 70 centimeters in diameter centimeters in diameter. MICROSCALE OBJECTS
The diameter of Pollen, which human hairs ranges About 7 micrometers E. coli bacteria, found in fertilizes seed plants, from 50-100 across our intestines, are can be about 50 micrometers. around 2 micrometers micrometers in long. diameter. NANOSCALE OBJECTS
The Ebola virus, The largest naturally- which causes a DNA molecules, which Water molecules are occurring atom is bleeding disease, is carry genetic code, are 0.278 nanometers wide. uranium, which has an around 80 around 2.5 nanometers atomic radius of 0.175 nanometers long. across. nanometers. TRY THIS! Mark your height on the wall chart.
MEASURE How tall are you in nanometers? Are you super tall? Or is YOURSELF IN a nanometer super small? NANOMETERS THEN TRY THIS! Trace your hand on a worksheet.
How many nanometers long is it? Is your hand really big? Or is a nanometer really tiny? HOW TO MEASURE NANO TECHNOLOGY? A NANOMETER IS REALLY, REALLY TINY!
Nanoscale science focuses on things that are measured in nanometers, anything between 1-100 nanometers in size.
Scientists use special tools and equipment to work with nanometer-sized things.
Regular tools like rulers are too big! Computer chip Examples nanotechnology
Red blood cell on a needle HOW DIFFICULT IS MEASURE NANO OBJECTS?
A strand of your hair is around 75,000 nanometers wide.
One red blood cell is around 7,000 nanometers wide. TRY THIS! TOOLS USED BY So There is already difficult and only reach the best SCIENTISTS and tell them to do it three times to reach the micron and from there three times CAN INTERACT to reach the nanometer ... At the same time they can understand the lack of WITH SMALL accuracy when they try to THINGS do it with the scissors ...
1_ Named some tools
2_ Activity:
You have a strip of 20 cm. In groups of 4 cut for part of 5 cm. After cut a short decimetre ... hence one centimetre short of one millimetre ... WHAT IS TO BE SCIENTIST? "A SCIENTIST IS A PERSON WHO ASKS QUESTIONS AND TRIES DIFFERENT WAYS TO ANSWER THEM." A SCIENTIST :
• Learns from her senses • Notices details • Writes about what happens • Makes comparisons and measuring • Designs experiments to test predictions • Experiments by trial and error • Keeps trying over and over • Has fun CAN BE A?
An engineer A doctor Marine biologist
Surveyor Astronomer …. YOU CAN BE A SCIENTIST, TOO!