4.count accurately the actual number of droplets on the coin note: do not count the droplets which caused the mound (small rounded mass) to break
3. choose one type of coin you may use a medicine dropper or a small stick and actually drop water on the chosen coin.
5.record your actual result on the table and on your answer sheet.
6.answer the questions below using the data you gathered during the investigation guide questions:
a. give at least three causes for the differences in your predictions
b. compare your actual results with your predictions are they the same
c. give at least 5 reasons or factors why there are differences in the number of water drops in each type of coin
d. what do you call the factors you identify which caused the differences in the number of water droplets in the coin?