Module 20

Question 1

Hanford, WA

Answer 1

Site of world’s first nuclear detonation, home of “trinity” site

Question 2

Oakridge,TN

Answer 2

established in 1942, and was the production site for the Manhattan Project

Question 3

Fat Boy

Answer 3

Bomb dropped on Nagasaki, it was also the first nuclear bomb.

Question 4

Fuel Hydrocarbons

Answer 4

fuel that consists of mostly hydrocarbons

Question 5

chlorinated hydrocarbons

Answer 5

compounds of carbon, hydrogen, and chlorine atoms

Question 6

Radionuclides

Answer 6

substances that emit radiation spontaneously; also called tracers

Question 7

Toxic metals

Answer 7

Chronium, selenium,lead

Question 8

Organic complexing agents (EDTA)

Answer 8

A chemical that binds certain metal ions, such as calcium, magnesium, lead, and iron.

Question 9

DIRB

Answer 9

dissimilatory iron-reducing bacterium

Question 10

anerobic respiration

Answer 10

Respiration that does not require oxygen

Question 11

electron donor

Answer 11

A reactant that loses an electron and is oxidized in a reduction-oxidation reaction.

Question 12

Electron acceptor

Answer 12

ions or molecules that act as oxidizing agents in chemical reactions

Question 13

Bioremediation

Answer 13

The use of living organisms to detoxify and restore polluted and degraded ecosystems

Question 14

Biobarrier

Answer 14

a porous wall (or barrier), which is installed perpendicular to the groundwater flow direction

Question 15

bioaugmentation

Answer 15

the addition of microorganisms that have the ability to biodegrade recalcitrant molecules in the polluted environment.

Question 16

biostimulation

Answer 16

adding nutrients such as nitrogen and phosphorus to stimulate the growth of naturally occurring beneficial microbes