Graph Interpretation: Climate & Bar Charts — GCSE Geography Revision

Topic has curated content entry with explanation, mistakes, and worked example. [auto-gate:promote; score=75.25]

What is Graph Interpretation: Climate & Bar Charts?

Climate graphs show the average temperature and rainfall for a location over a year. They usually combine a line graph for temperature and a bar chart for rainfall, with months on the x-axis. Bar charts are used to compare discrete categories of data, such as the population of different cities or the amount of waste recycled by different countries. When interpreting any graph, it is crucial to use the data to support your statements.

Board notes: Climate graph interpretation is a classic and frequently tested skill for all boards (AQA, Edexcel, OCR). Bar chart interpretation is also a fundamental skill. Students must be able to read values accurately, calculate totals and ranges, and describe the patterns shown.

Worked example

Common mistakes

• 1Misreading the two different y-axes on a climate graph. One axis (usually the left) shows temperature in degrees Celsius, and the other (usually the right) shows rainfall in millimetres. Be careful to read from the correct axis for each data type.
• 2Forgetting to calculate the total annual rainfall or the annual temperature range. These are common questions. To find the total rainfall, you must add up the rainfall for all 12 months. The temperature range is the difference between the highest and lowest monthly temperature.
• 3Describing each bar on a bar chart individually. Instead, you should look for the overall pattern. Identify the highest and lowest values, group similar values together, and calculate the range or total if appropriate.

Graph Interpretation: Climate & Bar Charts exam questions

Exam-style questions for Graph Interpretation: Climate & Bar Charts with mark-scheme style solutions and timing practice. Aligned to AQA, Edexcel and OCR specifications.

Frequently asked questions

• How can you tell if a climate graph is for the southern hemisphere?

  In the southern hemisphere, the seasons are reversed. The line graph for temperature will show the warmest months to be December, January, and February, and the coolest months to be June, July, and August.

• What is a divided bar chart?

  A divided bar chart (or stacked bar chart) shows the total value for a category, but also breaks it down into its component parts. For example, a bar could show a country's total energy production, but be divided into sections representing coal, gas, nuclear, and renewables.