We blew into the straws connected to the bottles with water in them to move the water to a different bottle.  Some of us were successful in pumping the water from the one bottle to the next.  We had a lot of trouble with air leaks, because if you had an air leak you would decrease the air pressure inside the system.  If you didn't detect an air leak and fix it right away, it would get bigger and bigger and bigger!

Neil and Jon are creating their water pump system.	Laura and Julia are sealing an air leak that they just discovered.
Richard is getting ready to move his water.	Simon and Ted are blowing into their straws to move the water.