Third Lab Experiments

Satisfactory Essays
In our third lab, we experimented with the cohesive forces of surface tension. Water and pepper were combined. Soap was applied into a hole in a boat. The boat had a keyhole slit extending from the hole. The soap reduced the surface tension. The molecules spread out in all directions from the soap, but they could only travel through the keyhole slit in our boat. They traveled backward, but a force pushed forwards, propelling our boat forward. Newton’s Third Law states for every action there is an equal and opposite reaction. So, for the molecules escaping behind the boat, an equal and opposite force pushed the boat forwards.
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