Solar Energy
Physics: Cambridge International GCSE Supplement, topic 1.11.8
Solar Energy
Solar energy
- The electromagnetic waves emitted by the sun (e.g light), transfer energy to the earth.
- Solar cells absorb these waves and create an electric current without a generator.
- Some solar cells use heat from the sun to boil water, create steam and rotate a turbine, which turns a generator.
Infrared radiation
- Infrared radiation from the sun can also heat water directly in pipes, for use in heating systems or hot water supplies.
Advantages
- Renewable.
Disadvantages
- Only produces electricity when there is sunlight.
Test yourself on Solar Energy
Which of the following would NEVER be used in a solar power process?
Some features of solar energy are that it is...