Air pressure and gravity Experiment!

Hypothesis:

I think that all of them will work and I think that they will all work on the first go.

Results:

The result was that they all worked because even though the cups were different they all still had a vacuum and air pressure was there. Some took longer than others because people put their whole hand on the card instead of two fingers. This matters because when you put your whole hand on you apply too much pressure. If you press down with two fingers you make a suction between the card and the water. Also some techniques were more successful like when people slowly turned the glass over instead of doing it really fast.

Conclusion: My hypothesis was partly right. They all worked but not on the first go so I did ok with my prediction.