Energy- Triple

Question 1

Advantages and disadvantages of fossil fuels

Answer 1

ADVANTAGES:

1. Release a lot of energy cheaply
2. Doesn’t rely on the weather

DISADVANTAGES:

1. Carbon dioxide released contributes to global warming and climate change
2. Burning coal and oil makes sulfur dioxide(acid rain)
3. It is going to run out

Question 2

Nuclear reactors

Answer 2

1. Expensive to build and maintain
2. Processing the uranium causes pollution and there is a high risk of leaks
3. Always get radioactive waste
4. Don’t produce any greenhouse gases and there is plenty of uranium left in the ground

Question 3

Geothermal energy

Answer 3

1. Free, renewable energy with no environmental problems
2. Main drawback is the cost of drilling
3. Cost of building a power plant is often high compared to the amount of energy you get out of it

Question 4

Wind farms

Answer 4

1. Cheap to run and wind is free
2. No polluting waste and its renewable
3. Spoils the view and can be noisy
4. Expensive to set up and relies on the weather

Question 5

Wave power

Answer 5

1. No pollution and its renewable
2. Spoils the view and is a hazard to boats
3. Unreliable as the waves die when the wind drops
4. Initial costs are high but there are no fuel or running costs

Question 6

Solar energy

Answer 6

1. Sun is renewable
2. Initially expensive
3. No pollution
4. Generates electricity on a small scale

Question 7

Tidal barrages

Answer 7

1. No pollution and its renewable
2. Tides are pretty reliable but the height varies
3. Initial costs are moderately high

Question 8

Hydroelectricity

Answer 8

1. Renewable
2. No pollution
3. Big impact on environment: loss of habitat and release of carbon dioxide and methane by rotting vegetation
4. Initial costs are high