| Students used pipettes with the ends cut off. These are disguised within fishing lures that mimic squids. Each is weighted with a hex nut. Students had to adjust the amount of water inside the pipette to make it float at just the right level. If they could do so, they could place the contraption in a bottle of water. Once the lid is tightened, a person should be able to squeeze the bottle and watch the pipette sink; when the grip is loosened, the pipette should rise. |
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