Scientific information
Question: How many drops of water can fit on an NZ coin?
Research: My research told me that a Fifty cent coin can fit from 23 to 30 drops of water.
Hypothesis: I think that a 50c coin can fit 34 drops of water and $1 = 52, 20c = 28, 10c=15. I think that the 50c coin will overflow if we add more drops of water than we need to. I also think that if you flip the coin over it will be the
Test Hypothesis: Take the water dropper and a small cup. Suck up some water in the dropper, then put a few drops on the coin and start counting on the first drop. Then we put more drops until the whole coin is full. When your coin is filled and you reach a certain number, then you can write your results on your sheet.
Record Data:
| 50 cent coin | 36 droplets |
| 20 cents coin | 38 droplets |
| $2 coin | 56 droplets |
We only did three coins because we didn’t have any time to do more.
Analysis: I don’t know why the 50c coin couldn’t hold way more than the 20c coin and I was confused because the 20c coin was way smaller than the 50c coin. The reason why the 50c coin was 36 drops is because Eloise dropped one drop of water, the drop touched the edge of the 50c coin. It also touched the water that was on the coin a little bit, so all the water overflowed.
Results: Our 50c coin had 36 droplets on it and our 20c coin had 38 droplets. Our last coin, which was our $2 coin, had 56 droplets. It was fun to do all of these things and it was fun working with other people that you never hang out with. We also didn’t have enough time to start with more coins.
Conclusion:We were all a bit stressed because we were in a hurry to get all of them done, but even though we got through, the time was just not enough. Either way we had some fun.
My next question is: How many drops of water does it take to make a whole sheet of paper wet?
– Gabriella