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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

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
10-6 m
109 m
10-9 m

Q 2: 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.
Ultrasonic photography
Scanning probe microscopy
Optical telescopy
Infrared detector

Q 3: A unique phenomenon that occurs in nanoparticles is Gibbs-Thomson effect, which is the _____.
raising of the melting point of a material
instant evaporation of material
instant freezing of material
lowering of the melting point of a material

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

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Question 6: This question is available to subscribers only!


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