Exam 4

Question 0

What produces dioxins?

Answer 0

Incineration of medical waste

Question 1

What are two types of hazardous waste?

Answer 1

Dioxins and PCBs (polychlorinated biphenyls)

Question 2

Where do dioxins bioaccumulate?

Answer 2

Body fat

Question 3

PCBs are generated from what and are likely what?

Answer 3

Industrial chemicals; carcinogenic

Question 4

Where is hazardous waste stored long term?

Answer 4

Landfills

Question 5

When is the average computer replaced?

Answer 5

18-24 months

Question 6

What % of high tech devices go to landfills?

Answer 6

80%

Question 7

How many pounds of toxic compounds are in the average computer?

Answer 7

3-8lbs

Question 8

What % of computers are recycled?

Answer 8

20%

Question 9

Energy use in developed nations is mostly for

Answer 9

Transportation

Question 10

Energy use in developing countries is mostly for

Answer 10

Agriculture/residential

Question 11

What % of people live in highly developed countries?

Answer 11

20%

Question 12

People in developed countries use __ times the amount of people in developing countries

Answer 12

8x

Question 13

The US has __% of the world’s population, but uses __% of its energy

Answer 13

5%, 25%

Question 14

What % of the US energy budget is from fossil fuels?

Answer 14

93%

Question 15

How much of the USA’s energy comes from renewable sources?

Answer 15

7%

Question 16

What is the compound fossil fuels are made from?

Answer 16

Kerogen

Question 17

This is produced by heating wood in the absence of oxygen

Answer 17

Charcoal

Question 18

What continents have the majority of the world’s coal reserves?

Answer 18

Asia and Oceania, Eastern Europe and Russia, North America

Question 19

What are the two ways to mine coal?

Answer 19

Subsurface mining and strip mining

Question 20

What is the most abundant fossil fuel we have?

Answer 20

Coal

Question 21

Coal reserves in the US could last us how many years?

Answer 21

200 years

Question 22

What fossil fuel produces the most CO2?

Answer 22

Coal

Question 23

Coal mining causes environmental _____

Answer 23

Degradation

Question 24

What isotope of uranium is used for nuclear fission fuel in nuclear reactors?

Answer 24

Uranium-235

Question 25

Uranium enrichment involves removal of

Answer 25

U-238

Question 26

After mining, uranium is encased in small

Answer 26

solid ceramic pellets

Question 27

Each pellet produces the same amount of energy as __ gallons of oil

Answer 27

150 gallons

Question 28

Pellets are stacked to form

Answer 28

Fuel rods

Question 29

Fuel rods are grouped to form

Answer 29

Fuel assemblies

Question 30

The reactor vessel includes thick walls of

Answer 30

Concrete

Question 31

The containment building includes a ____ lining and _____ shielding

Answer 31

Steel lining; concrete shielding

Question 32

What causes the Three Mile Island accident?

Answer 32

Loss of cooling water

Question 33

Nuclear waste is stored at 125 sites in __ states

Answer 33

39 states

Question 34

Spent nuclear fuel is stored in

Answer 34

Casks

Question 35

Casks are designed to last __ years

Answer 35

40 years

Question 36

What is the proposed long term storage site for nuclear waste in the US?

Answer 36

Yucca Mountain, Nevada

Question 37

Renewable sources generate _% of energy globally

Answer 37

6%

Question 38

Which region is the best for solar power in the US?

Answer 38

Southwest

Question 39

What is the process used to convert water into diatomic hydrogen?

Answer 39

Electrolysis

Question 40

The flex fuel engine runs on what type of fuel?

Answer 40

E85 --> 85% EtOH

Question 41

Which three countries are the top investors in wind power?

Answer 41

1. Germany 2. USA 3. Spain

Question 42

What are the best places in the US for wind energy?

Answer 42

Texas, California, Great Plains

Question 43

What renewable energy generates 20% of the world's energy?

Answer 43

Hydropower

Question 44

Heat within earth is caused by:

Answer 44

Tectonic friction, radioactive decay, the core