What type of fuel is wood?
Tick (✓) one box - AQA - GCSE Physics Combined Science - Question 4 - 2020 - Paper 1
Question 4
What type of fuel is wood?
Tick (✓) one box.
A non-renewable biofuel
A non-renewable fossil fuel
A renewable biofuel
A renewable fossil fuel
Give two enviro... show full transcript
Worked Solution & Example Answer:What type of fuel is wood?
Tick (✓) one box - AQA - GCSE Physics Combined Science - Question 4 - 2020 - Paper 1
Step 1
What type of fuel is wood?
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Answer
Wood is classified as a renewable biofuel because it is sourced from trees that can be replenished over time.
Step 2
Give two environmental effects of using wood as an energy resource.
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Answer
Burning wood causes air pollution, releasing smoke which can harm human health and the environment.
Burning wood may lead to deforestation, resulting in habitat destruction for many species.
Step 3
Describe the change to the stores of energy of the wood, pipe and water as the water is heated.
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Answer
Wood: The chemical store of energy in the wood decreases as it is burnt, releasing energy as heat.
Pipe: The internal or thermal store of energy in the pipe increases as it absorbs heat from the burning wood.
Water: The internal or thermal store of energy of the water increases as it absorbs heat, causing its temperature to rise.
Step 4
Explain why the temperature of the water stays constant.
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Answer
The temperature of the water stays constant because energy is dissipated to the surroundings even as the fire continues to burn. At the same time, energy is transferred to the water, maintaining the temperature.
