Complete the sentences - AQA - GCSE Physics - Question 10 - 2021 - Paper 1
Question 10
Complete the sentences.
Nuclear fusion is the joining together of ____________________________.
During nuclear fusion the total mass of the particles ______________... show full transcript
Worked Solution & Example Answer:Complete the sentences - AQA - GCSE Physics - Question 10 - 2021 - Paper 1
Step 1
Nuclear fusion is the joining together of
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Answer
nuclei.
Step 2
During nuclear fusion the total mass of the particles
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decreases.
Step 3
Calculate the energy needed to increase the temperature of the deuterium by 50 000 000 °C.
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Answer
To calculate the energy, we use the formula:
E=mcheta
where:
m=0.004kg (mass of deuterium)
c=5200J/kg°C (specific heat capacity of deuterium)
θ=50000000°C (temperature change)
Now, substituting the values:
E=0.004kg×5200J/kg°C×50000000°C
Calculating this gives:
E=1.04×109J.
Step 4
Suggest two reasons why models were tested.
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To ensure the fusion process is possible.
To develop an understanding of the process.
Step 5
Explain one environmental effect of generating electricity using fossil fuels.
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Generating electricity using fossil fuels releases carbon dioxide which causes global warming.
