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Electrical Energy Generation Sources
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Electrical Energy Generation Sources
⚡ Part 1: Energy Sources and Transformations
1. Which of the following is a renewable energy source?
Coal
Natural gas
Solar energy
Nuclear fuel
2. In a coal-fired power plant, what is the main energy transformation that occurs?
Chemical energy → thermal energy → kinetic energy → electrical energy
Kinetic energy → chemical energy → electrical energy
Solar energy → thermal energy → electrical energy
Nuclear energy → kinetic energy → electrical energy
3. Which energy sources are commonly used in Australia? (Select all that apply)
Coal
Hydroelectric
Wind
Solar
Natural gas
4. Complete the energy transformation for a wind turbine:
_____________ energy → _____________ energy → _____________ energy
5. What happens to energy during transformations according to the law of conservation of energy?
Energy is created
Energy is destroyed
Energy is conserved but can change forms
Energy disappears completely
🌍 Part 2: Environmental and Social Impacts
6. Explain one environmental advantage and one environmental disadvantage of solar power generation.
Advantage:
Disadvantage:
7. Why might efficiency be an important consideration when choosing an energy generation method?
8. List two social factors that communities might consider when a new power plant is proposed in their area.
Factor 1:
Factor 2:
🔬 Part 3: Scientific Investigation
9. Develop an investigable question about comparing the efficiency of two different electrical energy generation methods.
10. Based on your question above, write a hypothesis that could be tested.
11. If you were designing an experiment to test energy efficiency in a simple circuit model, what would you measure to determine efficiency?
The brightness of the light bulb only
The input energy and useful output energy
The colour of the wires
The size of the battery
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