Part 1

Question 1

inexpensive, abundant in the united states, does not require a high level of processing, has a net energy ratio of 33, and emits the most pollutants and greenhouse gases of all energy sources

Answer 1

coal

Question 2

abundant and can be made into many products, and many countries depend on foreign imports for supply

Answer 2

oil

Question 3

abundant in the ocean but is difficult to extract with current technology

Answer 3

methane hydrate

Question 4

abundant in the united states and burns cleaner than other fossil fuels

Answer 4

natural gas

Question 5

can be burned directly but is more costly and takes more energy to mine and process

Answer 5

oil shade

Question 6

available in many areas and has no net increase in carbon dioxide emissions if forests are replanted

Answer 6

solid biomass

Question 7

very efficient at accessible sites but expensive at nonaccessible sites and can lead to groundwater depletion

Answer 7

geothermal electricity

Question 8

can currently be used as fuel that has no net carbon dioxide emissions but can result in increase in land used, water scarcity, and higher food prices

Answer 8

biofuel

Question 9

the process of using technology to collect, store, and distribute sunlight in a building

Answer 9

active solar heating

Question 10

the process of using building design to collect, store, and distribute sunlight in a building naturally

Answer 10

passive solar heating

Question 11

a device that directly converts solar energy into electricity

Answer 11

photovoltaic cell

Question 12

a process that uses different methods to collect and concentrate solar energy to boil water and produce steam to generate electricity in power plants

Answer 12

solar thermal system

Question 13

an energy source that is formed from ancient dead organisms

Answer 13

fossil fuel

Question 14

a chemical compound extracted from oil to make products

Answer 14

petrochemical