Energy Sources and Power Stations

Question 1

How does a nuclear power station work?

Answer 1

Nuclear fission of uranium or plutonium produces heat. This turns water to steam and this turns a turbine, which turns a generator.

Question 2

Advantages and disadvantages of using wind power?

Answer 2

Pros: Doesn’t cause pollution. No fuel costs. Minimal running costs. No permanent damage to landscape.

Cons: Noisy. Wind is variable. High initial costs.

Question 3

What are the advantages and disadvantages associated with hydroelectric power?

Answer 3

Pros: Produces an immediate response to an increased demand for electricity. Reliable source of energy. No fuel or running costs. Good at providing energy on a small scale in remote areas.

Cons: High initial costs. Flooding the valley leaves rotting vegetables and releases methane and CO2. Possible loss of habitat. Looks very ugly when dried up.