AQA · Chemistry · 8462
GCSE Chemistry: The carbon footprint and its reduction
Chemistry of the atmosphere · AQA GCSE Chemistry (8462), specification point 4.9.2.4. Cards are generated from the exam board's own specification for "The carbon footprint and its reduction", and every card links back to the page it came from. Specification © AQA — used with attribution.
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Define the term 'carbon footprint'.
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The total amount of carbon dioxide and other greenhouse gases emitted over the full life cycle of a product, service or event.
A carbon footprint counts greenhouse gas emissions over the ? of a product, service or event.
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full life cycle
A carbon footprint includes carbon dioxide and other ? emitted.
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greenhouse gases
Reducing emissions of which two gases reduces a carbon footprint?
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Carbon dioxide and methane.
Besides carbon dioxide, a carbon footprint is reduced by cutting emissions of ?.
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methane
Why does cutting livestock farming reduce a carbon footprint?
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Cattle and other livestock release methane, a greenhouse gas, so fewer animals means lower methane emissions.
How does switching to renewable energy reduce a carbon footprint?
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Less fossil fuel is burned, so less carbon dioxide is released.
Why does a lack of international cooperation limit efforts to reduce carbon footprints?
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Greenhouse gases mix globally, so one country cutting emissions has little effect if others do not.
Why might the cost of an action limit its use in reducing carbon footprints?
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Low-carbon technologies (e.g. carbon capture, renewables) can be expensive, so companies and governments may be unwilling to pay for them.
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