This comprehensive quiz covers all lessons in Energy: conservation and efficiency, heat transfer and thermal properties, renewable and non-renewable sources, electricity generation and storage, circuits and Ohm's law, and future energy evaluation.
This quiz assesses your understanding of the entire Energy unit.
Energy conservation, efficiency, Sankey diagrams, forms of energy, and energy transformations.
Energy transfer and work, heat vs temperature, conduction, convection, radiation, specific heat capacity, and thermal expansion.
Renewable and non-renewable sources, electricity generation, grid, transmission, distribution, and energy storage.
Circuit basics, series and parallel, Ohm's law, future energy, global trends, and school energy audit.
1. Which statement best describes the law of conservation of energy?
2. What does efficiency measure?
3. In a Sankey diagram, what does the width of each arrow represent?
4. What is the difference between heat and temperature?
5. Which heat transfer method involves the movement of particles within a fluid?
6. Why does water have a high specific heat capacity?
7. Which of the following is a renewable energy source?
8. What is the main disadvantage of coal as an energy source?
9. In the electricity grid, what happens during transmission?
10. What does voltage measure in a circuit?
11. In a series circuit, what happens to the current at different points?
12. Ohm's law states V = IR. If V = 6 V and I = 2 A, what is R?
13. Why might a country invest in battery storage alongside solar farms?
14. Which factor is most likely to increase global energy demand over the next 30 years?
15. Which statement best summarises the entire Energy unit?
Explain the law of conservation of energy and give a real-world example showing how it applies.
State the law clearly and describe an example where energy transforms but the total amount stays constant.
Compare conduction, convection and radiation as methods of heat transfer. Give one example of each.
Define each method and give a clear, different example for each.
Evaluate the statement: "Renewable energy sources are always the best choice." Use evidence and at least two criteria.
Consider advantages of renewables but also identify limitations using criteria such as cost, reliability, land use, or storage.
A circuit contains a 12 V battery and a 4 ohm resistor. Calculate the current. Then explain what would happen to the current if a second identical resistor were added in series.
Use Ohm's law for the calculation, then explain how total resistance and current change in series.
Your school wants to reduce its energy use and carbon footprint. Outline a practical plan that includes data collection, analysis, and at least two evidence-based recommendations.
Describe specific steps, what data to collect, how to analyse it, and concrete recommendations with reasoning.
1: C. Energy cannot be created or destroyed, only transferred or transformed.
2: B. Efficiency is useful energy output divided by total energy input.
3: B. Width is proportional to the amount of energy in each pathway.
4: C. Temperature measures average kinetic energy; heat is the transfer of thermal energy.
5: B. Convection involves warmer, less dense fluid rising and cooler fluid sinking.
6: B. Water needs a large amount of energy to raise its temperature by 1 degree Celsius.
7: C. Solar power is continuously replenished by the sun.
8: B. Burning coal releases large amounts of carbon dioxide and other pollutants.
9: C. Transmission moves electricity at high voltage over long distances to reduce energy loss.
10: C. Voltage is the potential difference that pushes charge around a circuit.
11: C. In a series circuit, current is the same at every point.
12: A. R = V / I = 6 / 2 = 3 ohms.
13: B. Battery storage captures surplus solar energy for use when the sun is not shining.
14: C. Growing populations and industrial development drive increased energy demand.
15: C. The unit integrates conservation, efficiency, sources, circuits, and evidence-based evaluation of energy use.
Model answer:
Model answer:
Model answer:
Model answer:
Model answer:
You should state and apply the law of conservation of energy to real systems.
You should calculate efficiency and interpret Sankey diagrams.
You should classify and evaluate renewable and non-renewable energy sources.
You should describe circuits, compare series and parallel, and apply Ohm's law.
You should use evidence and multiple criteria to evaluate energy choices.
Use your audit skills and depth study preparation for real-world investigations.