P1.4.1 Generating Electricty

Question 1

Examples of energy sources

Answer 1

• The fossil fuels (coal, oil and gas) which are burned to heat water or air.
• uranium and plutonium, where energy from nuclear fission is used to heat water.
• biofuels that can be burned to heat water.

Question 2

What drives turbines directly

Answer 2

Water and wind can be used for this

Question 3

Energy sources

Answer 3

In some power stations an energy source is used to heat water. The steam produced drives a turbine that is coupled to an electric generator.

Question 4

Electricity producer eg

Answer 4

Electricity can be produced directly from the Suns radiation.

Question 5

Geothermal energy

Answer 5

In some volcanic areas hot water and steam rise to the surface. The steam can be tapped and used to drive turbines.

Question 6

Effects of energy resources on environment

Answer 6

The release of substances
The production of waste materials
Noise and visual pollution
The destruction of wildlife habitats