Energy Basics Flashcards
Energy is derived from the Greek word _____ which means “in-work” or work content
en-ergon
Capacity to do work.
Energy
Action of moving something against a force
Work
Work output depends on the
Energy input
Is always conserved
Energy
Before industrial revolution, for heat:
sun and burned wood, straw and died dung
Six different periods of societal development from oldest to most recent
Primitive, Hunting, Primitive agricultural, Advanced agricultural, Industrial, Technological
Personal energy consumption was relatively constant until
Advanced agricultural
Industrial Revolution happened
1750-1850
A single steam engine, powered by _____, could do the work of dozen of horses
coal
coal powered a steam engine attached to the world’s first electric generator
1880
___________ plant in New York City provided the first electric light to Wall Street financiers and the New York TImes
Thomas Edison
By the late 1880s, a new form of fuel was catching on
Petroleum
Energy use grew quickly, doubling every ____
10 years
After _____ unleashed nuclear power, the government found it in electricity production.
World War II (1939-1945)
By ____, the average mileage of an American car was only ________ miles per gallon, and a gallon of gas cost less than a _______.
1970, 13.5, quarter
The invention of the automobile increased from 2% in 1900 to ___% in 2010
40
Within ____ years, energy consumption of industrialized nation increased ______.
200, eightfold.
The energy consumption of a nation can be broadly divided into the following areas or sectors depending on energy-related activities.
Domestic sector, transportation sector, agriculture sector, industry sector
The __________ of a country is an index of the standard of living or prosperity of the people of the country
Per capita energy consumption
Although 80 percent of the world’s
population lies in the developing
countries their energy consumption
amounts to only ____________
world total energy consumption.
40%
The world average energy
consumption per person is equivalent
to __________
2.2 tonnes of coal
People use _____ times more than the world average and ______ times more than the average for developing countries
5,9
Energy balance
source + import = export + variation of stock + use + loss
Local or national primary energy sources like coal, hydro, biomass, animate, etc.
Sources