Sources of Greenhouse Gases
This deep dive covers Sources of Greenhouse Gases within Greenhouse Effect for GCSE Chemistry. Revise Greenhouse Effect in Atmosphere for GCSE Chemistry with 25 exam-style questions and 12 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 4 of 14 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 4 of 14
Practice
25 questions
Recall
12 flashcards
🏭 Sources of Greenhouse Gases
Carbon Dioxide (CO₂)
- Burning fossil fuels: coal, oil, and natural gas in power stations, vehicles, and homes
- Deforestation: removes trees that would otherwise absorb CO₂ through photosynthesis; burning trees releases stored carbon
- Industrial processes: cement production — CaCO₃ → CaO + CO₂
Methane (CH₄)
- Cattle and other livestock: methane produced during digestion (enteric fermentation)
- Rice paddies: anaerobic decomposition in flooded fields
- Landfill sites: decomposing organic waste releases methane
- Natural gas leaks from pipelines and extraction
Water Vapour (H₂O)
- The most abundant natural greenhouse gas
- Not a direct human emission — but acts as a feedback: as CO₂ warms the planet, more water evaporates, amplifying warming
Keep building this topic
Read this section alongside the surrounding pages in Greenhouse Effect. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Greenhouse Effect
Which of these gases is NOT a greenhouse gas?
Explain why the natural greenhouse effect is important for life on Earth.
Quick Recall Flashcards
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