Question

bart has a science fair project due this week and decides to determine if band - aids really speed up healing. he has just had a skateboarding accident and had cuts on both his knees. on his left knee, he covers the cut with a bandaid and then he leaves the right knee uncovered. at the end of the week he removes the bandaid and compares the two cuts. the one that was covered seems mostly healed, but the one that was not covered looks red and has not healed. identify the 9. control 10. manipulated (independent) variable 11. responding (dependent) variable 12. what should his conclusion be?

Explanation:

• Control: The uncovered cut on the right knee is the control group as it is not subjected to the treatment (band - aid).
• Manipulated (Independent) Variable: Whether or not a band - aid is applied is the independent variable as it is the factor being changed by Bart.
• Responding (Dependent) Variable: The level of healing of the cut is the dependent variable as it is the outcome that is being measured and is expected to be affected by the independent variable.
• Conclusion: Based on his experiment, Bart can conclude that band - aids seem to speed up the healing process of cuts.

Answer:

1. The uncovered cut on the right knee
2. Whether or not a band - aid is applied
3. The level of healing of the cut
4. Band - aids seem to speed up the healing process of cuts.