I predict that as I descend in the water, the air bubble in the plastic tube will shrink. When I reach 2 atmospheres of pressure or 33 feet of water the air bubble will shrink to half its origanal size and so on. When I gett to 66 feet, the air bubble will shrink to 1/4 the size it was originally. The following table will help describe the statement I just made.


Depth in feet Size of air bubble (cm)
0 13.5
11 11.2
22 8.99775
33 6.75
44 5.02275
55 4.498875
66 3.375



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