Question

A marine biologist measured the amount of heat radiated from an aquarium over the course of an experiment. His measurements are shown in the graph below.
Graph shows heat, measured in Joules, radiated from an aquarium over time, measured in seconds. At 0 seconds, the energy, in the form of heat, is 1.2 Joules. At 5 seconds, the energy is 1.6 Joules. At 10 seconds, the energy is 1.3 Joules. Finally at 15 seconds, the energy is 1.5 Joules.


Based on this data, he concludes that the aquarium cannot be considered a closed system for this experiment. Explain why this conclusion is invalid.


A closed system exchanges both matter and energy with its surroundings, and the scientist only measured the exchange of heat.

A closed system can exchange energy but not matter with its surroundings, and the scientist did not measure the movement of matter.

A closed system exchanges all of its energy with its surroundings, and the scientist only measured the exchange of heat.

A closed system exchanges all of its matter with its surroundings, and the scientist did not measure the movement of matter.

Answer 1

Answer:

The correct answer is - A closed system exchanges all of its energy with its surroundings, and the scientist only measured the exchange of heat.

Explanation:

The amount of heat radiated is measured and analyzed by the marine biologist in this given experiment from an aquarium and on the basis of data the diagram is represented that states that the radiated energy is not constant over time and there are fluctuations.

It can not be considered as a closed system as energy is still exchange with the surrounding system, however, mass is not exchange but still, it cannot be called a closed system.