... production, providing 53 percent of all electricity. Renewable energy sources
such as wind and solar provide less than 0.5 percent of total electricity
production. Therefore it is quite evident that fossil fuels are very important
to the quality of life in America and will be relied on for many deca ...
... • Research investigation into energy resources
in your home country.
• (a) What are the main energy problems?
• (b) Name the alternative sources of energy
that are used.
• ( c) how can the energy problems be reduced?
• Comment on the use of nuclear energy
referring to the after effects of Tsunami i ...
... Figures from the IEA suggest that up to 1,400 coal-fired power stations of
1GW capacity will be required to match the global energy demand up to
2030. The IEA also estimate that power generation will contribute half the
increase in global carbon dioxide emissions to 2030.
... Characteristics of Electric Power Plants
1-Initial cost of a hydroelectric plant is normally higher than that of a
thermal plant producing almost the same amount of power
2-The maintenance and repair costs of a thermal plant are much higher than
for a hydroelectric plant.
3-Thermal plant needs one ...
... Compare energy consumption of contemporary society with that of traditional cultures
Compare Canada’s per-capita energy consumption with developed and developing
nations and ID factors that affect consumption (i.e. economy, lifestyle, level of
technology, geography and climate)
Apply sustainable dev ...
... • Renewable energy from the power of
• Depends on the gravitation potential
energy of the dam to “turn a
• Used originally as a water wheel.
• First hydropower power plant was
built in 1882 in Appleton. Wisconsin.
• There are 84,000 dams in U.S. but
only 2,220 have equipment ...
... • Allows us to become less dependent on fossil fuels
Cons The photovoltaic cells are expensive
• Weather can impact the efficiency of solar cells
• Pollution can impact the efficiency of solar cells
9.2 Describe Wind energy(how does it form & give Advantages/Disadvantages)
The unequal heating of t ...
... Geothermal energy: steam from active volcanic regions
and underground rocks can be used to generate
electricity and supply hot water and heating needs. More
than 70% of Iceland’s homes are heated with geothermal
The main form of geothermal power is where bodies of water, either
above or belo ...
... The petroleum sector in Macedonia consists of refinery in
Skopje (OKTA) a petroleum pipeline from the Greek border to
the refinery ,and a distribution system for petroleum products
including terminals and service station. The refinery is supplied
with crude oil through pipeline jointly owned by Hell ...
... Near the equator, solar energy is intense, as the
sun is almost directly overhead at noon all year
Near the poles, solar energy is diluted
Creates three different
climate zones: tropical,
temperate, and polar.
... years, the peat was covered by sand and clay and other minerals, which turned into a type of rock called
sedimentary. More and more rock piled on top of more rock, and it weighed more and more. It began to press
down on the peat. The peat was squeezed and squeezed until the water came out of it and ...
... animals buried for millions of years and changed chemically into coal,
petroleum, and natural gas (mostly carbon); they are taken from the ground
*Convenient-we have the infrastructure (railroads/pipelines) to obtain and
transport them/can build these power plants most ...
... 34. How many meters in one kilometer?
35. How many meters would 3.5 km be equal to?
36. How does erosion move stuff?
37. What are the two types of weathering?
38. What is the process by which rock is worn away over time?
39. In which part of a lab report does one make an educated guess?
40. What is ...
The environmental impact of electricity generation is significant because modern society uses large amounts of electrical power. This power is normally generated at power plants that convert some other kind of energy into electrical power. Each system has advantages and disadvantages, but many of them pose environmental concerns.