Renewable Energy Resources | GCSE Physics Practice
Renewable energy resources can be replenished as they are used, providing sustainable alternatives to fossil fuels.
Why is solar energy not reliable?
What is Renewable Energy Resources | Practice?
"Energy from sources that are naturally replenished on a human timescale."
Which law states that energy cannot be created or destroyed?
Why can efficiency never be 100% in a mechanical system?
A 5 kg weight is lifted 2 metres. Calculate its GPE (g = 9.8).
Which formula is used to calculate kinetic energy?
Clean Energy
Wind: Turbines use kinetic energy to turn generators.
Solar: Cells convert light directly into electrical energy.
Hydroelectric: Uses GPE of water in high reservoirs.
Biofuel: Plant matter or animal waste used as fuel.
Geothermal: Uses thermal energy from hot rocks underground.
Exam Advantage: Always qualify your answer. "Renewable" means not running out; "Reliable" means available 24/7 (Wind is renewable but NOT reliable).
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