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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?
10-6 m
109 m
10-9 m
106 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
Infrared detector
Scanning probe microscopy
Optical telescopy

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

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

Q 5: While manipulating nanoparticles, the following would happen.
gravity would become less important
all of these
Van der Waals attraction would become more important
surface tension would become more important

Q 6: _____ refers to a hypothetical end-of-the-world event involving molecular nanotechnology in which out-of-control self-replicating robots consume all living matter on Earth while building more of themselves (a scenario known as ecophagy).
Grey Goo
Apocalypse Now
Mad Nano
I Robot

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Question 8: This question is available to subscribers only!


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