Thermodynamics: Engines and Entropy

 Here some green liquid was poured into a cup of water. This was to demonstrate the concept of entropy. Entropy is the measure of disorder in the system. In another situation, pennies were dumped onto a table to demonstrate entropy increase.

 Here an engine was used to move a propeller. The device had ice placed on top and hot water at bottom. It then used the difference between the two to power the engine.

 Here we graphed an isochoric and isothermal process on a entropy vs. temperature graph. We also found the efficiency of a device.

 Here we converted units between two systems. We went from a unit used in the United States, and converted it to metric units. We started with 1 BTU, went to calories, then Joules.

Here we worked on an example involving items freezing in a freezer. We first found the max performance, the power, and then how long it would take for our item to freeze