Question 1
FCarbon dioxide and methane are greenhouse gases.
Scientists measure the concentration of carbon dioxide in the atmosphere in parts per million (ppm). They also measure the mean global temperature.
The graphs show the mean values for six decades.
a.[1]
Use the graph to calculate the increase in the mean concentration of carbon dioxide from the 1960s to the 2010s.
Increase = ...... ppm
b.[1]
Name one human activity that increases the amount of methane in the atmosphere.
c.[6]
Describe how greenhouse gases keep the Earth warm, and explain how the data supports the idea that human activities are causing climate change.
Give one reason why the data alone does not prove that human activities are causing climate change.
Use ideas about radiation and the data in the graphs.
6.3 Interpreting and interacting with earth systems Questions
51 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.