AQA · Physics · 8463
GCSE Physics: National and global energy resources
Energy · AQA GCSE Physics (8463), specification point 4.1.3. Cards are generated from the exam board's own specification for "National and global energy resources", and every card links back to the page it came from. Specification © AQA — used with attribution.
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What is a renewable energy resource?
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One that is being (or can be) replenished as it is used.
A ? energy resource is one that is being (or can be) replenished as it is used.
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renewable
Name the three fossil fuels.
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Coal, oil and gas.
Are fossil fuels renewable or non-renewable?
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Non-renewable — they are not replenished as they are used.
Is nuclear fuel a renewable energy resource?
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No — nuclear fuel is non-renewable; it is not replenished as it is used.
Is bio-fuel a renewable energy resource?
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Yes — bio-fuel is renewable because it can be replenished (regrown) as it is used.
Name the three main uses of energy resources.
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Transport, electricity generation and heating.
Why are wind and solar power less reliable than fossil fuels?
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Their output depends on the weather (wind speed, sunshine), so they cannot supply energy on demand, whereas fossil fuels can be burned whenever needed.
Which energy resources are more reliable: tidal or wind?
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Tidal — tides are predictable, whereas wind varies with the weather.
Give two renewable energy resources that use moving water.
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Hydro-electricity and tidal power (also water waves).
Why can science identify environmental issues from energy use but not always solve them?
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Because solutions are limited by political, social, ethical or economic considerations, not just scientific ones.
Why must new power stations be built in every generation?
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Power stations, like all machines, have a limited lifetime, and demand for electricity keeps rising.
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