Writing Science Reports
Communicate scientific findings in a structured report using appropriate scientific vocabulary, SI units, and standard notation; describe how peer review and replication contribute to the reliability of scientific knowledge
What a learner can do afterwards
- Writes a structured scientific report including aim, hypothesis, method, results, conclusion, and evaluation using appropriate scientific vocabulary
- Uses SI units and standard form consistently throughout a report
- Explains what peer review is and why replication by independent researchers is essential for scientific claims to be accepted
1 · Read
A science report lets other people read what you did, check your thinking, and repeat your experiment. To do that clearly, every report follows the same structure and uses exact scientific language. The aim states the question you are investigating. The hypothesis says what you predict will happen, before you start. The method lists every step, so someone else can copy it exactly.
The results section reports what you measured, nothing more. Numbers belong here, set out in tables and charts with exact units. The conclusion says what the results show about your hypothesis. The evaluation honestly judges how reliable the experiment was and how it could be improved next time.
Two habits make your report precise. First, always use SI units, like grams (g), metres (m), seconds (s), or degrees Celsius (°C), never made-up or mixed units. Second, write very large or very small numbers in standard form, such as 4.5 × 10^7 m instead of 45000000 m. Exact numbers with clear units beat vague words like 'a lot' every time.
A student tests plant growth with and without fertiliser. In the results section she writes: 'Group A (fertiliser) averaged 18 cm. Group B (no fertiliser) averaged 12 cm.' The chart below shows the same data.
A result does not become accepted science the moment one person writes it up. First, other scientists read the report and challenge its reasoning. That checking process is called peer review. Then other labs repeat the experiment, which is called replication. If different teams get similar results, the finding earns trust. If they get different results, scientists hold off on believing it until someone works out why.
A science report has a clear structure, exact SI units and standard form, and only counts as reliable once peer review and replication back it up.
More to read
10.1 Writing an Informative Report
A science report tells the story of an investigation from question to conclusion. Start with the aim: what you wanted to find out. Then the hypothesis: your best guess before you began. The method explains what you did, step by step, so someone else could repeat it. Results show your data in tables and graphs with clear labels. The conclusion answers the aim using your evidence. The evaluation is where you think hard about what went well, what did not, and how you would improve it next time. Scientists write this way so others can check their work.
Critical Thinking
Good science writing is honest about uncertainty. When you describe your methods, include the details that matter: how many trials, what equipment, how you controlled variables. When you present results, show the data, not just the average. Explain what the numbers mean in plain language. In the evaluation, admit limitations: small sample size, measurement error, assumptions you made. This is not weakness; it is how science builds trust. Peer review works because other scientists read your report and ask the questions you might have missed.
Practical introduction to writing reviews in health research
Writing about science means making complex ideas clear without dumbing them down. Use the active voice: we measured, we observed, we calculated. Define technical terms the first time you use them. Structure each paragraph around one main point. Connect paragraphs with transitions that show the logic of your argument. A report that is easy to follow is a report that gets read, cited, and built upon.
2 · Watch
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Where it sits
Where this leads
8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.