A research question names the thing you will measure, the place and the comparison. A hypothesis is your testable guess at the answer, written before you collect data.
This lesson is about the wording itself. To narrow a broad topic first, see turning a broad topic into an answerable local investigation question. Both sit inside geographical investigation.
What does a testable question look like?
It uses a measure word and a comparison. A helpful pattern is: “How does [measured variable] differ between [place 1] and [place 2] at [time]?”
Weak questions lack one of these three parts. Compare them below.
| Question | Problem |
|---|---|
| “Is it hot at school?” | No comparison and no measure |
| “Why is the field hot?” | Needs causes you cannot prove in one visit |
| “How does air temperature differ between under the big tree and the open field at 10.00 a.m.?” | Measure, two places and a time |
Worked example: a temperature comparison
This is a worked example. A student writes: “How does air temperature at 1 m above ground differ between under the big tree and on the open field at 10.00 a.m.?”
Write the hypothesis. The student predicts: “The air temperature at 1 m above ground will be lower under the tree than on the open field.” The word lower makes it testable, because readings can agree or disagree.
Collect the data. Five readings were taken at each spot, one minute apart, in °C.
| Spot | Readings (°C) | Total | Mean |
|---|---|---|---|
| Under the tree | 27, 27, 28, 27, 28 | 137 | 27.4 |
| Open field | 31, 32, 31, 32, 32 | 158 | 31.6 |
Check the sums: 27 + 27 + 28 + 27 + 28 = 137, and 137 ÷ 5 = 27.4. For the open field, 31 + 32 + 31 + 32 + 32 = 158, and 158 ÷ 5 = 31.6.
Compare with the hypothesis. The open field mean is 31.6 − 27.4 = 4.2 °C higher. The data supports the hypothesis for this morning, on these spots.
A careful statement adds the edge: “This supports the hypothesis at 10.00 a.m. on one day. It does not show why the field was warmer, because shade was not measured separately from other differences.”
The mistake: a question that hides its own answer
A common slip is to write “Does the tree cool the field?” This asks for a cause and invites a yes. It also treats shade as proven.
Reword it to ask about a difference. “How does temperature differ?” asks you to report numbers, and the explanation stays in the discussion, clearly labelled as possible.
Another slip is to rewrite the hypothesis after the readings arrive. Keep the original guess and report honestly whether the data matched it.
Check yourself
A student wants to compare wind speed in two school spots. Write a research question with a measured variable, two places and a time, then write a hypothesis.
Answer
One model answer. Question: “How does wind speed, measured with a hand-held anemometer or a simple cup device, differ between the open basketball court and the space between two classroom blocks at 11.00 a.m.?”
Hypothesis: “The wind speed will be lower between the classroom blocks than on the open court.” Both parts name the same measure, so the data can show support or no support.
What to study next
After wording, plan how many readings to take in choosing a sampling approach. Then test the whole skill set with the investigation practice set.
For one-to-one help wording your own question, see online one-to-one Geography tuition.