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Nanotechnology: Impacts, Risks, and Ethics

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Nanotechnology: Impacts, Risks, and Ethics

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Questions and Answers

What is the main reason for the concern about nanotechnology?

Huge gaps in knowledge concerning the possible risks (correct)

Enormous potential of the technology

Difficulty in detecting and removing the risks

Absence of regulation in the industry

What is the unit that means one billionth?

Millimeter

Nanometer (correct)

Micrometer

Centimeter

What is the thickness of a sheet of newspaper in nanometers?

50,000 nanometers

150,000 nanometers

100,000 nanometers (correct)

200,000 nanometers

What is the process of making nanoparticles by adding atoms together one by one?

Bottom-up approach Signup and view all the answers

What is the scale at which nanoscience deals with materials?

Atomic, molecular, and macromolecular scale Signup and view all the answers

What is the main focus of nanotechnology?

Design, characterization, and production of devices and systems Signup and view all the answers

What is a potential application of titanate nanofibers and nanotubes?

Radioactive waste cleanup Signup and view all the answers

What is a property of silver nanoparticles?

Antimicrobial properties Signup and view all the answers

What is a potential application of graphene?

Heat-resistant & self-cleaning surfaces Signup and view all the answers

What is a potential danger of nanotechnology?

Immunosuppression Signup and view all the answers

What is a potential application of nanofiber from zeolite?

Purifying methane gas in biodigesters Signup and view all the answers

What is a challenge in assessing the risks of nanotechnology?

Difficulty in detecting nanoparticles Signup and view all the answers