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Energy & Environmental Terms

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Total cards: 24•Content version: v3•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

Fossil Fuels

Back (Answer)

Energy sources from ancient plants and animals (coal, oil, natural gas)

#2
Front (Question)

Conventional

Back (Answer)

Common, easy-to-extract energy sources

#3
Front (Question)

Unconventional

Back (Answer)

Harder-to-extract energy sources

#4
Front (Question)

Oil & Natural Gas

Back (Answer)

Liquid and gas fossil fuels used for energy

#5
Front (Question)

Hydrocarbons

Back (Answer)

Molecules made of hydrogen and carbon, main components of fossil fuels

#6
Front (Question)

Kerogen

Back (Answer)

Waxy substance in rocks that turns into oil or gas with heat

#7
Front (Question)

Shale Gas

Back (Answer)

Natural gas trapped in shale rock

#8
Front (Question)

Tight Gas

Back (Answer)

Natural gas in dense rock, hard to extract

#9
Front (Question)

Coal (peat, bitumen, anthracite)

Back (Answer)

Fossil fuel in different forms: peat (soft), bitumen (soft coal), anthracite (hard coal)

#10
Front (Question)

Energy Density

Back (Answer)

Energy stored per unit of fuel

#11
Front (Question)

Power Density

Back (Answer)

Energy output per unit of area

#12
Front (Question)

Net Energy

Back (Answer)

Usable energy left after production costs

#13
Front (Question)

Automatic Waste

Back (Answer)

Waste that happens naturally in a process

#14
Front (Question)

Unnecessary Waste

Back (Answer)

Waste that could be avoided

#15
Front (Question)

Commercial Waste

Back (Answer)

Waste from businesses

#16
Front (Question)

Subsistence Waste

Back (Answer)

Waste from basic living activities

#17
Front (Question)

Net Energy Ratio

Back (Answer)

Energy gained vs. energy used to get it

#18
Front (Question)

2nd Law of Thermodynamics

Back (Answer)

Energy is always lost as heat in transfers

#19
Front (Question)

Energy Return on Investment (EROI)

Back (Answer)

Energy produced per unit of energy spent

#20
Front (Question)

Crude Oil/Petroleum

Back (Answer)

Unrefined oil from the ground

#21
Front (Question)

Peak Oil

Back (Answer)

The point when oil production reaches its highest before declining

#22
Front (Question)

OPEC

Back (Answer)

Group of oil-producing countries controlling supply

#23
Front (Question)

Coalbed Methane

Back (Answer)

Methane gas in coal seams

#24
Front (Question)

Tight Sands

Back (Answer)

Natural gas in compact sandstone