Energy Resources
Sources of energy are renewable or non-renewable.
About this topic
Energy resources are classified as non-renewable, such as coal, oil, natural gas and uranium, which are finite, or renewable, such as solar, wind, hydro, geothermal and biomass, which are naturally replenished. Fossil fuels release carbon dioxide, contributing to climate change.
Each source has trade-offs in cost, reliability, land use, waste and emissions. Solar and wind depend on weather and need storage or backup; hydro needs suitable rivers and can disturb ecosystems; nuclear has low emissions but produces long-lived waste. Most are used to turn a turbine connected to a generator, and the efficiency of conversion matters.
Example: a typical coal power station is about 35% efficient, so most of the energy in the fuel is lost as heat, while a hydroelectric plant can exceed 85%. A household that switches to LED bulbs and better insulation reduces demand, which is often the cheapest way to save energy. Solar panels on rooftops, offshore wind farms and electric vehicles are all part of the transition.
Tips: renewable does not mean unlimited power at all times, and non-renewable does not mean it vanishes. When comparing sources, consider the whole life cycle, including construction, fuel supply, waste and decommissioning.
Key ideas
- Fossil fuels release CO₂
- Solar, wind, hydro renew
- Efficiency and storage matter
Quick check
Use cases: where Energy Resources helps
- Homework: review the key idea behind Energy Resources before you start a problem set.
- Exam revision: use the quick check to test whether you can recall Energy Resources without notes.
- Visual learning: play with the interactive lab to see how Energy Resources changes when you adjust its inputs.
- Teaching a friend: explain Energy Resources in your own words, then compare your version with the key ideas.
The same laws describe car crashes, sports, satellites and everyday machines.
Frequently asked questions
What is Energy Resources?
Sources of energy are renewable or non-renewable.
What will I learn in Energy Resources?
Fossil fuels release CO₂. Solar, wind, hydro renew. Efficiency and storage matter.
Is Energy Resources part of Physics?
Yes. It is one of 150 Physics topics on LearnViz HighSchoolEdu, with 3 key ideas, a live animation and a quick check.
Does the Energy Resources lab work on a phone or tablet?
Yes. The animation resizes to fit your screen and supports touch, so you can drag, tap and slide with your finger.
How should I study Energy Resources?
Read the summary and key ideas first, play with the interactive lab to see the idea in motion, then answer the quick check. If you get a question wrong, go back to the key idea it tests.
Do I need an account, and is my progress saved?
No account is needed. Marking a topic as learned is saved in your own browser, so it stays on that device and is not sent to a server.