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Grade 8 English
4.17 Nano Technology

Directions: Answer the following questions and verify your answers. Do your own research and write an informative essay about nano technology.
Q 1: Nanotechnology is the understanding and control of matter at dimensions of roughly 1 to 100 nanometers, where unique phenomena enable novel applications. What is a nanometer?
106 m
10-9 m
10-6 m
109 m

Q 2: A unique phenomenon that occurs in nanoparticles is Gibbs-Thomson effect, which is the _____.
raising of the melting point of a material
instant freezing of material
instant evaporation of material
lowering of the melting point of a material

Q 3: Potential benefits of nanotechnology might include
advanced pharmaceuticals and new drug delivery systems
faster computers and advanced data storage
all of these
improvements in skin care and protection

Q 4: Critics of nanotechnology point to the potential toxicity of new classes of nanosubstances and compare them to
microscopic materials like asbestos fibres
green house emissions
highly damaging acid rain
atom bomb

Q 5: One fundamental characteristic of nanotechnology is that nanodevices self-assemble. That is, they build themselves from the bottom up. _________ is an important technique both for characterization and synthesis of nanomaterials.
Scanning probe microscopy
Optical telescopy
Infrared detector
Ultrasonic photography

Q 6: The following may be considered naturally occurring nanodevices.
cells
viruses
all of these
prions

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Question 8: This question is available to subscribers only!


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