A research group compares climate-model predictions with the measured change in global average temperature between 1880 and 2020.
| Source of result | Change in global average temperature (°C) |
|---|---|
| Model using natural factors only | 0.4 |
| Model using human emissions and natural factors | 1.0 |
| Measured change | 1.2 |
Which conclusion can be drawn from these results?
The model using human emissions and natural factors predicts a change 150% greater than the model using natural factors only, and is 0.8 °C below the measured change.
The model using human emissions and natural factors predicts a change 150% greater than the model using natural factors only, and is 0.2 °C below the measured change.
The model using human emissions and natural factors predicts a change 60% greater than the model using natural factors only, and is 0.2 °C below the measured change.
The model using human emissions and natural factors predicts a change 250% greater than the model using natural factors only, and is 0.2 °C below the measured change.
109 exam-style questions on OCR GCSE Chemistry 6.3 Interpreting and interacting with earth systems, covering 6.3.1 Formation and evolution of the atmosphere, 6.3.2 The greenhouse effect and climate change, 6.3.3 Sources and problems of atmospheric pollutants, and 6.3.4 Producing potable water. Each one has a worked solution and a mark scheme showing where the marks go.