Saturday, February 9, 2008

Activity 3.4 Question

How do energy flow diagrams relate to the 1st Law of Thermodynamics? The laws of thermodynamics in general?

5 comments:

Jackie Schechter said...

The First Law of Thermodynamics states that all heat added to a system adds to the energy of a system. Energy flow diagrams relate to this law because they show the transfer of energy between different objects. Each time the energy transfers, it is added to energy of that object, as the fist law states. Energy flow diagrams also relate to the Second Law of Thermodynamics, which states that heat flows from areas of higher temperatures to areas of lower temperatures. Energy is shown being lost to the air in energy flow diagrams, and that portrays the Second Law of Thermodynamics.

Christopher Noda said...

An energy flow diagram relates back to the first law of thermodynamics because the energy flow diagram shows every step in which energy is lost to another system or how the energy is converted and subtracted from the first system. First the first law of thermodynamics states that all energy entering a system will add that amount of energy to that system. Therefore When energy is lost from that system that amount of energy will be subtracted from that system. In activity 3.3 we learned how to draw energy flow diagrams that shows where energy is lost when there are transfers of energy. Most energy is lost in the form of heat but there are other ways to lose energy. But the reason an energy flow diagram relates to the laws of thermodynamics is because its a picture way to see the laws happening.

Chloe said...

The laws of thermodynamics and the L of C of E relate to energy flow diagrams because they show the transfer of energy and where energy goes. The FLOTD says all energy entering a system adds that amount of energy to the system. Energy flow diagrams show where energy goes and that also relates to the SLOTD because the SLOTD states heat will always flow from areas of higher temperature to areas of lower temperature. the L of C of E says that energy can't be created or destroyed. That relates to energy flow diagrams because it

Suzie said...

The First Law of Thermodynamics states that energy entering a system adds that amount of energy to that system. The Second Law of Thermodynamics states that energy in the form of heat will always travel from low areas of temperature to high areas of temperature. The Law of Conservation of Energy states that energy can't be created or destroyed. Energy flow diagrams relate to all laws by showing the energy transfers that took place in an activity; it may show energy traveling from a hotter area to a cooler area, and it shows that there is not a single place energy 'disappeared' or 'appeared' magically. Energy flow diagrams relate directly to the First Law of Thermodynamics by using arrows to show energy transfers; the amount of arrows (energy) entering a system always adds that amount of energy to that system, and when energy is given off to the environment, it is shown with an arrow that energy was added to the environment. The arrows allow us to get a sense of how much energy is transferred and where it goes.

Lucy Lloyd said...

The First Law of Thermodynamics states that all energy entering a system adds that much energy into the system. An energy flow diagram shows this because every bit of energy that we started out with, keeps going, it is never destroyed, and no more energy is gained throughout energy transfers. Even though much of the energy in one material is not passed on to the next material, it is not destroyed, it goes into the air, or turns into a form of energy that is not usable to us. Energy flow diagrams also simply relate to the laws of thermodynamics in general, the second law of thermodynamics states that energy will always flow from objects of higher temperatures to objects of lower temperatures. Energy flow diagrams show this because the energy flows from warmer objects to cooler objects in all scenarios. Energy flow diagrams help us understand the laws of thermodynamics and the Law of Conservation of Energy.