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Most energy used in the world is generated from non-renewable energy sources - Leaving Cert Home Economics - Question 1(b) - 2011
Question 1(b)
Most energy used in the world is generated from non-renewable energy sources. (i) Discuss one non-renewable source of energy used in the home. Refer to: • source • ... show full transcript
Worked Solution & Example Answer:Most energy used in the world is generated from non-renewable energy sources - Leaving Cert Home Economics - Question 1(b) - 2011
Step 1
Discuss one non-renewable source of energy used in the home.
Answer
One non-renewable source of energy commonly used in homes is Electricity, predominantly generated by burning fossil fuels.
Source
Electricity is produced in power plants where fossil fuels like coal, natural gas, or oil are combusted. The heat generated converts water into steam, which then drives turbines connected to generators.
Advantages/Disadvantages
- Advantages:
- Clean, efficient, and versatile.
- Powers heating, lighting, appliances, and various tools effectively.
- Disadvantages:
- The cost of production is high, contributing to expensive power bills.
- Environmental concerns arise from greenhouse gas emissions associated with fossil fuel combustion.
Sustainability
Electricity generation from fossil fuels is not sustainable in the long term as resources are finite. The depletion of these resources leads to increased production costs and environmental degradation, necessitating a shift towards renewable energy sources.
Step 2
Describe three ways in which the design and construction of a house can help reduce energy consumption.
Answer
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Solar Systems: Installing solar panels allows for harnessing sunlight, converting it to electricity, and reducing reliance on non-renewable energy sources.
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Efficient Insulation: Proper insulation keeps homes warmer in winter and cooler in summer, minimizing the need for heating and air conditioning. This results in lower energy costs and enhanced comfort.
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Energy-Efficient Lighting: Utilizing LED light bulbs instead of traditional incandescent bulbs significantly reduces electricity consumption while providing the same level of brightness.