Planning a fair absorbency test
Some materials soak up water — they are absorbent. Today you will run a fair test to find out which material is the most absorbent. In a fair test you change one thing and keep everything else the same.
Run your investigation
Question and prediction
Q1. Write the question your test will answer.
Q2. Which material do you predict will be most absorbent? Give a reason.
Make it fair
Q3. Complete the fair-test plan.
| Part of the test | What I will do |
|---|---|
| I will CHANGE (one thing) | |
| I will MEASURE | |
| I will KEEP THE SAME (list them) |
Results
Q4. Record how much water each material absorbed (in mL).
| Material | Water absorbed (mL) |
|---|---|
Q5. Draw a column graph of your results. Label both axes and give it a title.
Conclusion and evaluation
Q6. Which material was the most absorbent? How does your data show this?
Q7. Was your test fair? Did anything else change by accident? What would you improve next time?