Adapted from: https://www.sciencebydoing.edu.au/teacher/doing-science-investigations
The responses to most of these questions need only be simple, to the point statements.
- What idea do you want to investigate? E.g., which colour car is coolest? Does Which brand of corn chips tastes best? Which brand of paper towel is best?
- List all of the things/factors that could affect my investigation? E.g., how much sun/heat the colour is exposed to; how I measure “taste”, the amount of water used to test absorbency, the price of the different paper towel brands; etc. Variables that can be measured directly are easiest e.g., volume, time, temperature, distance.
- Choose the variables to investigate:
I will change:
I will measure:
I will keep all of these the same:
- My testable question: (e.g., How does changing the “independent variable” affect the “dependent variable”? How does changing the grand of paper affect the amount of water absorbed?
- Turn this question into a hypothesis that follows the “if, then” format: (this is based on your prior understanding of what might happen e.g., If the brand of paper is changed the then amount of water absorbed changes. OR Different brands of paper towel will absorb different amounts of water. OR The brand of paper towel affects how much water is absorbed).
- Procedure: Write the step by step “recipe” for your investigation. Remember each step should start with the verb e.g.,
- Purchase 3 different brands of paper towel.
- Cut a 10 cm by 10 cm sample from each brand.
NB: An important aspect of your procedure will be to explain how you will measure the variables – this may need a few sentences to explain e.g., how will you measure water absorption? Will you pour out a fixed volume of water onto a surface and measure how much liquid remains after place the paper towel on top? How will you measure the amount of liquid remaining? What tools will you use that will give a number to record as data? E.g., eye dropper? Or will you develop a test to measure what volume of water is needed before the paper starts to drip? This can be quite tricky because if your measurement method is not well thought out it could be meaningless (i.e., it can’t be replicated by someone else).
Also include a list of materials needed for the investigation e.g., 3 sheets of paper towel of different brands (specify the brand names), eye dropper, stopwatch,
- Identify safety issues e.g., water spillage could cause slipping; allergies to corn chip ingredients etc. You will explain how you deal with these issues when you fill out Part C Risk Assessment.
- Data Collection: Use a table to record the results of your investigation. Remember ot use the conventions from the Student Guide p. 32. Include all data that is relevant e.g., the price per sheet of paper towel brand.
- Date Presentation: Is it feasible to create a graph from your data? If so, choose the correct format (bar graph, line graph etc.). The easiest way to create a graph is to use Excel spreadsheet program and copy and paste into this document. Remember to use the conventions for drawing graph from the Student Guide p. 33. Your investigation may not lend itself to presenting a graph, and that is ok.
Insert graph (copy and paste from Excel or insert image of hand drawn graph):
- Analysing the data: Look for a pattern or trend in your results e.g., there were differences in the amount of water absorbed by different paper towel brands. Brand A absorbed more than twice as much as Brand B…etc,
- Discussing the data: Describe what happened in your investigation by explaining the relationship between the variables you investigated. What does the data indicate? E.g., The trend in the water absorbency shows that the cheaper brands absorbed the least amount of water.
You should research a reason for this result – what science concept explains this result? What does water absorbency depend on? How does this relate to your results? E.g., Water absorbency depends on the thickness of the paper because water is absorbed by capillary action Capillary action is when water molecules enter the small channels or capillaries between the fibres of the paper. More fibres means more channels which allows more water to be absorbed. Cheaper brands may use thinner paper and so would have less absorbency.
- Conclusion: A simple statement that either confirms or rejects your initial hypothesis. No need to discuss the data any further as that should be done in the previous section. State and evaluate the significance and general outcomes of your investigation. E.g., This investigation confirms the initial hypothesis that water absorbency does change depending on the brand of paper towel. The results suggest that cheaper paper towels absorb less water. This could be due to the cost of the material used in the paper towel. The implications are that when purchasing paper towel, both the cost and water absorbency are factors to consider. OR The results could refute your hypothesis to show that absorbency is not different. So the hypothesis is rejected and the implications are that it is possible to save money when purchasing paper towel because water absorbency is the same for cheap and expensive brands.
- For future investigations: Consider what related ideas you could investigate to provide more information for your hypothesis. E.g., Testing whether different brands have different paper strength i.e., how much water do they absorb before tearing/ripping.
State this idea as a testable question:
List any websites/books you looked up to explain the results.
- Assignment status: Already Solved By Our Experts
- (USA, AUS, UK & CA PhD. Writers)
- CLICK HERE TO GET A PROFESSIONAL WRITER TO WORK ON THIS PAPER AND OTHER SIMILAR PAPERS, GET A NON PLAGIARIZED PAPER FROM OUR EXPERTS