renewable and non-renewable energy sources

Question 1

wind energy:atmosphere

Answer 1

renewable, green
1.converts the mechanical energy into electrical energy.
2.Wind energy cannot be stored;
3.Wind energy can be unreliable and unpredictable.
4. ruins beauty of landscape
5. very noisy(noise pollution)

Question 2

solar power:atmosphere

Answer 2

renewable,green,
This technology is costly and is unreliable
1.passive heating systems;positioning a house to maximize heat from sun.
2.photovoltaic cells(solar panels);sunlight hits panels cause electrons to flow, creating electric current
3.solar collectors;glass oanels that capture heat to warm up air

Question 3

hydraulic:hydrosphere

Answer 3

green,renewable,flooding
mechanical energy into electrical energy.

Question 4

marine currents :hydrosphere

Answer 4

green,renewable,expensive, disrupts marine life
1.create large quantities of energy

Question 5

fossil fuels:lithosphere

Answer 5

release ghg, not renewable
oil and natural gas: when small marine animals and algea died and sank to sea floor gradually get covered by layers of sand and rock.
coal: terrestrial swamps being covered by sediments
1. fossil fuels burn to produce thermal energy, which can also be converted into mechanical and electrical energy in thermal power plants.
2.fuels releases pollutants such as CO 2, CH 4, SO 2, NO X released.

Question 6

nuclear:lithosphere

Answer 6

green,not renewable,efficiant,nuclear waste dangerous
produced by atomic fission mainly uranium
1. transform thermal energy into mechanical and electrical energy.
2.small amount of radioactive material produces a lot of energy.
3.Nuclear waste is another by-product and needs to be buried since it continues to release radioactivity for hundreds of years.

Question 7

geothermal:lithosphere

Answer 7

renwable,green
Below the lithosphere lies hot magma which releases thermal energy.
1. water is circulated deep underground;heats lava which rises to surface;transformed into electrical energy or to heat homes
2.It can be difficult to access geothermal energy. It can also be very expensive.

Question 8

tidal:hydrosphere

Answer 8

renew,green,difficult maintenance,disturb marine life,predictable 2high 2 low tides
tidal power plants use tides to produce electrical energy