Question

As a result of the Law of Conservation of Energy, a fish cannot gain more energy than it consumes. An isolated system consisting of an aquarium, a large fish, and fish food is set up. Which of the following methods would best demonstrate the Law of Conservation of Energy?

Answer 1

I think The best way to test this hypothesis would be to measure  the total energy of the aquarium before feeding and the energy of the food fed to the fish. Then measure the energy in the aquarium after feeding and determine the difference.