Communicating Findings (VCE SSCE Physics): Revision Notes

Communicating Findings

Introduction to scientific communication

A fundamental aspect of scientific investigation is sharing your findings with others. When you complete an experiment, it's not enough to simply record your results in a notebook - the scientific community values transparency and reproducibility. One of the most effective ways to communicate your investigation is through a scientific poster.

Scientific posters are valuable tools for presenting research at conferences, in classrooms, and in professional settings. They allow researchers to share their work with a broad audience and receive feedback from peers.

Purpose of a scientific poster

A well-constructed scientific poster achieves several important goals:

• It clearly communicates your research question and why it matters
• It provides enough detail for others to replicate your investigation
• It presents your data in an accessible, visual format
• It explains your findings and their significance to the broader field of physics
• It acknowledges sources of information and inspiration

The key is to be both comprehensive and concise. Every section should serve a clear purpose in telling the story of your investigation from start to finish.

Structure of a scientific poster

Scientific posters follow a standard structure that helps readers navigate your work efficiently. The layout is organized to guide the reader through your investigation in a logical sequence.

Title section

The title of your poster should immediately tell readers what your investigation is about. Rather than using a vague label, phrase your title as a research question. This approach clearly identifies the relationship you're investigating.

Below the title, include your name (and the names of any collaborators). This provides proper attribution for the work.

Introduction section

The introduction sets the theoretical foundation for your investigation. It should accomplish three main tasks: provide background information, define key terms and present relevant formulas, and state your aim and hypothesis.

Background information

Begin by explaining the physics concepts that underpin your investigation. This contextualises your experiment within established scientific knowledge. For the inclined plane example, you would explain how the angle affects the force components:

As the angle of inclination increases, the component of gravitational force acting down the plane increases. This component can be calculated using $F_{\parallel} = mg\sin(\theta)$, where $m$ is the mass of the object, $g$ is gravitational acceleration, and $\theta$ is the angle of inclination.

You would then connect this to Newton's second law ($F_{net} = ma$) to explain that a greater force component produces greater acceleration. Finally, link this to the kinematic equation $s = ut + \frac{1}{2}at^2$ to show why greater acceleration means less time to travel the same distance.

Key definitions

For example:

Angle of inclination: the angle a ramp makes to the horizontal surface.

Relevant formulas

List the main equations you'll use in your investigation and analysis. For the inclined plane example:

$F_{\parallel} = mg\sin(\theta)$

$s = ut + \frac{1}{2}at^2$

Aim and hypothesis

Conclude your introduction by stating what you set out to investigate (the aim) and what you predicted would happen (the hypothesis). The aim identifies your research question, while the hypothesis provides your testable prediction based on the background theory you've explained.

Methodology section

The methodology section explains how you conducted your investigation. Someone reading this section should be able to replicate your experiment exactly. This requires three components: a materials list, a visual representation of your setup, and a step-by-step procedure.

Materials list

Provide a complete inventory of everything needed for the investigation. Be specific about quantities and types. For the inclined plane investigation:

• 1 × 75 cm plank of wood
• 1 × small bouncy ball
• 1 × stack of books
• 1 × protractor
• 1 × stopwatch

Experimental setup

Include a labelled diagram or photograph showing how you arranged your equipment. This visual reference is crucial because it immediately shows spatial relationships that might be difficult to describe in words alone.

Every element in your diagram should be clearly labelled. In this example, the diagram shows the wooden plank propped up by textbooks, the ball's starting position, and how the angle of inclination is measured. Sequential numbering (e.g., "Figure 2") helps readers reference specific diagrams when discussing results.

Procedure

Results section

The results section presents the data you collected during your investigation. This is typically the most visually prominent part of your poster, as it contains the empirical evidence supporting your conclusions.

Presenting data

Display your raw data in a format that makes patterns and relationships clear. For many investigations, a graph is more effective than a table because it allows readers to immediately visualise trends. However, a table might be appropriate if you have a small dataset or if exact values are more important than overall trends.

For the inclined plane investigation, a graph plotting time against angle of inclination effectively shows the relationship between variables:

Angle of Inclination (°)	Time (s)
10	1.5 ± 0.1
20	1.1 ± 0.1
30	0.8 ± 0.1
40	0.6 ± 0.1
50	0.5 ± 0.1

The graph should include proper labels, units, a line of best fit, and error bars to show measurement uncertainty. Number it sequentially (e.g., "Figure 3") and include a descriptive caption.

Key features of results

After presenting your data, briefly highlight the main patterns or trends. For the inclined plane example:

• The graph shows that increasing the angle of inclination of the plane reduces the time it takes the ball to reach the end of the plank
• The relationship appears approximately inverse, with time decreasing as angle increases
• Error bars show relatively small uncertainty in time measurements, suggesting reliable data collection

Evaluating data quality

Comment on whether your results are useful for drawing conclusions. Consider factors like:

• Is there a clear pattern or trend?
• Are measurements consistent (low random error)?
• Do data points follow the expected relationship?

For this investigation, you might note: "The results from this experiment appear to be useful, as the graph shows a clear relationship between the angle of inclination of the plane and the time it takes for the ball to roll down it."

Hypothesis support

Make an initial assessment of whether your data supports your hypothesis. This isn't a full analysis (that comes in the discussion), but rather a preliminary observation: "This observation supports the hypothesis of the investigation, that increasing the angle of inclination of the plane will decrease the time it takes for the ball to reach the bottom of it."

Discussion section

The discussion section is where you interpret your results and explain their significance. This goes beyond simply describing what happened - you need to analyse why it happened and what it means. The discussion is distinguished from the results section by its focus on explanation and evaluation rather than presentation.

Extent of hypothesis support

For the inclined plane investigation: "The data from the investigation supports the hypothesis that increasing the angle of inclination of the plane will decrease the time it takes for the ball to reach the bottom of it. Each increase in the angle of inclination of the plane led to a decrease in the time it took for the ball to roll down it."

Comparison with theoretical predictions

Where possible, compare your experimental results with theoretical predictions. This helps evaluate the accuracy of your measurements and identify systematic errors.

For this investigation, you could calculate theoretical values using the formula:

$t = \sqrt{\frac{2s}{g\sin(\theta)}}$

Plot these theoretical values on the same graph as your experimental data. This allows readers to see how closely your results match theoretical expectations.

You might note: "The experimental data appears to have longer times for the ball to roll down the ramp than theoretical predictions. This is likely due to the effects of friction, which decrease the acceleration of the ball down the plane."

Error analysis

Linking to broader concepts

Use the discussion to move from the specifics of your investigation to general physics principles. How do your findings illustrate or confirm established theories? What do they reveal about the underlying physics?

This is where you demonstrate understanding of how your particular investigation connects to the wider field of physics. For the inclined plane example, you might discuss how your results demonstrate the relationship between force components, acceleration, and motion that Newton's laws predict.

Conclusion section

The conclusion brings your investigation to a close by summarising what you found and what it means. Think of this as answering the question posed in your title, then reflecting on the investigation's limitations and future directions.

Main findings

State your key experimental finding and whether it supported your hypothesis. Be specific - reference particular patterns or trends in your results.

For example: "The experiment's results show that increasing the angle of inclination of the plane will decrease the time it takes for the ball to reach the bottom of it. This supports the experiment's hypothesis, that increasing the angle of inclination of the plane will decrease the time it takes for the ball to reach the bottom of it."

Notice how this directly answers the research question from the title and explicitly states the relationship found between variables.

Limitations and improvements

For the inclined plane investigation: "The data is limited in the number of different angles of inclination used to test the hypothesis. The experiment could be improved by taking more data points for different angles of inclination. Additionally, using automated timing gates instead of manual timing would reduce measurement uncertainty."

Future research

Suggest how your investigation could be extended or what related questions could be explored. This demonstrates understanding of your work's place within broader scientific inquiry.

For example: "Future research could be undertaken to investigate how increasing the angle of inclination of the plane will decrease the time it takes for the ball to reach the bottom of it, with different balls used or different materials used to create the inclined plane. This would help determine whether the relationship holds for different masses and friction coefficients."

References and acknowledgements section

The final section of your poster acknowledges the sources of information and support that contributed to your work. This is both an ethical requirement (giving credit where it's due) and a practical one (allowing readers to explore topics further).

Referencing sources

Any information you used to develop your understanding or design your investigation should be referenced. This includes:

• Textbooks and scientific papers you consulted
• Online resources that explained relevant concepts
• Previous studies that inspired your investigation
• Theoretical frameworks you applied

Acknowledgements

If you received help or support, acknowledge it here. This might include:

• Teachers or mentors who guided your work
• Peers who assisted with data collection
• Institutions that provided equipment or facilities
• Funding sources that made the investigation possible

Proper acknowledgement demonstrates integrity and gives credit to those who contributed to your success.

Key conventions for scientific poster writing

Remember!