This key facts covers CO₂ and Temperature: Key Data within Climate Change for GCSE Chemistry. Revise Climate Change in Atmosphere for GCSE Chemistry with 20 exam-style questions and 15 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 9 of 17 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
📋 CO₂ and Temperature: Key Data
| Year | CO₂ (ppm) | Temperature Change |
|---|---|---|
| Pre-industrial (1750) | 280 | Baseline (0°C) |
| 1950 | 310 | +0.5°C |
| 2000 | 370 | +0.8°C |
| 2023 | 420+ | +1.1°C |
Key point: This correlation reflects a causal mechanism — the enhanced greenhouse effect is well understood through physics, not just statistical correlation.
Practice questions for Climate Change
Which statement correctly describes the difference between weather and climate?
Explain three consequences of climate change for the environment or human populations. [3 marks]