MODULE 2 REV STS

Question 1

What is Nanotechnology?

Answer 1

Convergence of science, technology and engineering.

Question 2

scale of nanotechnology

Answer 2

less than 100 nanometers

Question 3

1 nanometer equals

Answer 3

10 negative nine squared

Question 4

how small is nano-small?

Answer 4

one nanometer is one-billionth of a meter

Question 5

how to view Nanomaterials

Answer 5

light microscope, scanning electron microscope , transmission electron microsscope

Question 6

Nanotechnology is already making today’s products

Answer 6

Lighter,stronger, faster, smaller , more durable

Question 7

Carbon nanotubes (CNTs)

Answer 7

4nm smaller than DNA
100 time stronger

Question 8

Top down approach

Answer 8

Bulk materials are broken down intro smaller and smaller particles

Question 9

Bottom-up approach

Answer 9

Nanoparticles are built up an atom/molecule

Question 10

Indium tin Oxide (ITO)

Answer 10

CRTS, Photographic films , Touch screens

Question 11

Magnetic recording tapes

Answer 11

Audiocassettes, Videocassettes, Data storage tapes, floppy disks , hard disks

Question 12

Sunscreen

Answer 12

UVB exposure, UVA exposure

Question 13

Nanoplex biomarker detection

Answer 13

Silicia - coated Surface Enhanced Raman Scattering (SERS)

Question 14

Photocatalysis

Answer 14

nanocrystals/films

Question 15

propellants

Answer 15

nanoscale AI powder have higher burn rates

Question 16

drug delivery and disease treatment

Answer 16

Potential to revolutionize cancer treatment

Question 17

What is Biodiversity?

Answer 17

Variability in life forms within and between species in an ecosystem

Question 18

Main types of Biodiversity

Answer 18

Species
Genetic
Ecosystem

Question 19

Ecosystem Biodiversity

Answer 19

Tropical rainforest
Arctic Tundra
Desert

Question 20

Species Biodiversity

Answer 20

Variety of species in a particular area, 1.7 million species

Question 21

Genetic Biodiversity

Answer 21

Variety of genes among individuals of the same species
example dog

Question 22

Amazon Rainforest

Answer 22

complex ecosystems , huge mix of species

Question 23

Variation of biodiversity

Answer 23

Biodiversity place to place
Higher biodiversity equatorial region
Polar region have low biodiversity

Question 24

Threats to biodiversity

Answer 24

Climate change
Land use changes
Pollution
Resources exploitation
Exotic Species

Question 25

Genes

Answer 25

Carried on a chromosome
Heridity
DNA - RNA - proteins