Static electricity investigation
This task is about critiqing the method used in an investigation.
Sandra did an experiment with static electricity. She ran a comb through her hair ten times and then held it over a pile of small pieces of paper.
She counted the number of pieces the comb picked up. She repeated the experiment three times.
Her results were:
Trial | Number of pieces of paper picked up |
1 | 3 |
2 | 7 |
3 | 5 |