Carbon Footprint
A carbon footprint is the total greenhouse gas emissions caused by a person, product or organisation, usually measured in tonnes of carbon dioxide.
▶ Interact
Play with the controls to see the idea in action.
📘 Learn
A carbon footprint is the total greenhouse gas emissions caused by a person, product or organisation, usually measured in tonnes of carbon dioxide.
- Transport, food and heating add to it
- Flights have a large impact
- Offsetting does not replace reducing
🧠 Quick quiz
Three questions. Score 2 or more to complete the topic.
What is Carbon Footprint?
Within Earth & Environmental Science, which covers our planet, its resources and ecosystems, and how people can protect the environment, this topic explains Carbon Footprint. Earth and environment topics show how the planet’s systems shape landscapes, climate and life, with models that make these processes visible.
Check that you can explain Carbon Footprint in your own words and give one example from everyday life. If you can do that, you have understood the core idea.
Understanding Carbon Footprint helps you explain the environment around you and weigh up how people can protect it.
Carbon Footprint in detail
A carbon footprint is the total amount of greenhouse gases, usually expressed as carbon dioxide equivalent, caused by an individual, organisation, product or event. It includes direct emissions (such as from driving or heating a home) and indirect emissions (from making the goods and services you buy, and electricity).
The average footprint varies greatly by country, from under 1 tonne per person per year in some low-income countries to over 10 tonnes in some wealthy ones. The biggest contributions usually come from transport, home energy, food and goods. Ways to reduce it include using renewable energy, flying less, eating less meat, buying less and using energy efficiently. Offsetting can help but should not replace cutting emissions.
How the interactive helps you understand Carbon Footprint
Watch the bar chart in the interactive. Use any sliders or buttons it offers to change the values and see how the bar chart responds.
Before you change anything, predict the result. Then change one value at a time and check whether your prediction was right. This is a quick way to build a correct mental model of Carbon Footprint.
Real-life uses and examples
- Discuss how human activity changes Carbon Footprint, using a named example.
- Explain how Carbon Footprint affects the landscape or climate near you.
- Link Carbon Footprint to a real environmental problem and a possible solution.
Common mistakes to avoid
- Presenting one cause as the only cause of an environmental change.
- Describing a process without the timescale it works over.
- Learning the definition without testing it. Use the quiz and the interactive to check that you can apply the idea.
Frequently asked questions about Carbon Footprint
What is Carbon Footprint?
A carbon footprint is the total greenhouse gas emissions caused by a person, product or organisation, usually measured in tonnes of carbon dioxide.
What are the most important points about Carbon Footprint?
The main points are: Transport, food and heating add to it; Flights have a large impact; Offsetting does not replace reducing.
Why is Carbon Footprint useful?
Understanding Carbon Footprint helps you explain the environment around you and weigh up how people can protect it.
How can I practise Carbon Footprint?
Open the interactive at the top of this page and change the controls one at a time. Predict the result before each change, then take the three-question quiz. A score of two or more marks the topic as complete on this device.
Which topics are related to Carbon Footprint?
Related topics in Earth & Environmental Science include Environmental Impact Assessment, The Moon and Its Phases, Day, Night and Earth's Rotation.