Explain the difference between using solar cells to create electricity and using mirrors or lenses to create electricity.
Solar cells use photons in light to produce electricity. Mirrors and lenses create heat that can be used to make steam for turbines that produce electricity.
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What is a turbine?
A rotating engine that works when a gas or liquid flows through it.
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Why haven't solar cells or other forms of solar power replaced the use of fossil fuels?
Solar power still costs a lot compared to the amount of energy it produces.
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What do solar cells use to create electricity?
They use photons.
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What are photons?
Photons are little packets of energy that all waves of radiation, including sunlight, contain.
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Name some clean alternative energy sources?
Wind power, solar power, geothermal power, etc
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What are photons?
They are tiny packets of electromagnetic radiation or energy
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What are a greenhouse gases?
They are gases that contribute to the heating of the Earth's surface.
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Do you think solar energy will be used more in the future? Explain your answer.
Yes. As fossil fuels become more expensive and solar cells get cheaper, using solar energy will be a good option.
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What flows through a turbine?
A gas or a liquid
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What is another name for a solar cell?
It is a photovoltaic cells.
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Where is the world's largest solar power plant located?
