Water Clock Experiment

Water Clock Experiment:

Problem:

How much water drips in 15 minutes

Materials:

• Plastic cup
• Beaker/Measuring cup (not to big)
• Pin
• Water

What did we do?

1. We poked a small hole at the bottom of the plastic cup and then we placed the plastic cup in the beaker.
2. Then we poured some water into the plastic cup and we started the 15 minute timer.
3. We waited for 15 minutes.
4. When the timer was done we quickly took the plastic cup and blocked the small hole so that no water could get out. We then tipped out the extra water that was inside the plastic cup and measured the water inside the beaker.
5. Then we repeated it again until we knew for sure our measurements were accurate.

Observation:

1st attempt:

The water was dripping very slowly and it would sometimes stop. We would have to shake and move the cup whenever the water would stop dripping. For the first trial, the results for 15 minutes was 30mls.

2nd Attempt:

The water dripped faster than the first attempt and we squeezed the cup whenever it stopped dripping. We also got a higher result which was 45ml. We didn't do 30 minutes but we estimated that it should've been around 80 ml.

3rd attempt:

We didn't get to do the third attempt.

Conclusion:

We conclude that our results differ from one another because in our second attempt we loosened the plastic cup . This could be the cause why the water dripped faster than the first attempt.

Reference

http://www.totalsmil.dk/wp/wp-content/uploads/2015/01/15-min.png