Energy

Question 1

Fossil fuels

Answer 1

Advantages: infrastructure exists, more E per mass than biomass, can be used anywhere.
Disadvantages: non renewable, considerable pollution, releases greenhouse gases.

Question 2

Nuclear

Answer 2

Advantages: no air pollution, highest energy per mass, can be used anywhere.
Disadvantages: non renewable , creates radioactive wastes, potential melt down.

Question 3

Biomass

Answer 3

Advantages: renewable, decreases landfills, less CO2 than fossil fuels, can be used anywhere.
Disadvantages: lowest E per mass, still has some pollution, requires lots of transportation.

Question 4

Geothermal

Answer 4

Advantages: renewable, no pollution, takes up very little space,
Disadvantages: least efficient, limited to certain locations.

Question 5

Hydroelectric

Answer 5

Advantages: renewable and reliable, low cost to operate, no pollution, creates lakes/reservoirs, can increase local water supply, most efficient.
Disadvantages: very expensive to build, affects ecosystem, decreases water quality downstream, can cause floods, limited locations.

Question 6

Tidal harness

Answer 6

Advantages: renewable, no pollution, very reliable, very efficient.
Disadvantages: must have at least 10ft tidal swing, affects marine life, costly to operate, can be damaged easily, limited locations.

Question 7

Solar(photovoltaic)

Answer 7

Advantages: renewable, no pollution, good for single homes or businesses, no turbine or generator needed.
Disadvantages:not always reliable, need back for at night, need a farm to power towns, can be expensive, limited locations.

Question 8

Solar heating

Answer 8

Advantages: renewable, no pollution, good for single homes or businesses, no turbine or generator needed.
Disadvantages: need backup for night and bad weather, can take time to heat the water, limited locations.

Question 9

Wind

Answer 9

Advantages: renewable can be installed on farms, can be used for single homes.
Disadvantages: not always reliable, can be noisy, need a farm to power towns, can be expensive, limited locations, dangerous for birds.