Question 1(Multiple Choice Worth 2 points)
(03.02 LC)Which of the following is not true about the Law of Conservation of Energy?
It states that the total energy in the universe keeps increasing.
It applies to everything in the universe.
It states that energy is transformed from one form to another.
It states that energy is neither created nor destroyed.
Question 2(Multiple Choice Worth 2 points)
(03.02 MC)What factor will most likely determine the best location for tidal current projects?
Current climate conditions
Presence of a tidal range
Temperature of the water
Type of tide present
Question 3(Multiple Choice Worth 2 points)
(03.02 MC)Water is harnessed to move a turbine. How is energy converted in this case?
Kinetic energy is converted to electrical energy.
Kinetic energy is converted to potential energy.
Potential energy is converted to kinetic energy.
Potential energy is converted to thermal energy.
Question 4(Multiple Choice Worth 2 points)
(03.02 MC)Which of the following statements describes what occurs with energy as a result of the Law of Conservation of Energy?
The amount of energy before a process occurs is less than the energy after the process occurs.
The amount of energy before a process occurs is greater than the energy after the process occurs.
The amount of energy before a process occurs is equal to the energy after the process occurs.
The amount of energy before and after a process occurs is always equal to zero.
Question 5 (Essay Worth 4 points)
(03.02 HC)Compare and contrast open, closed, and isolated systems. Be sure to discuss the exchange of energy and exchange of matter, and provide at least one example of each.
Question 1:
The correct answer is "It states that the total energy in the universe keeps increasing." This statement is not true because the Law of Conservation of Energy states that the total energy in the universe remains constant, not increasing.
Question 2:
The correct answer is "Presence of a tidal range." The best location for tidal current projects is determined by the presence of a tidal range, as this indicates a strong and consistent flow of tidal currents that can be harnessed for energy production.
Question 3:
The correct answer is "Kinetic energy is converted to electrical energy." In this case, the moving water (kinetic energy) is used to turn a turbine, which then generates electrical energy.
Question 4:
The correct answer is "The amount of energy before a process occurs is equal to the energy after the process occurs." The Law of Conservation of Energy states that energy cannot be created or destroyed, only transferred or transformed. Therefore, the total amount of energy remains constant before and after a process occurs.
Question 5:
Open, closed, and isolated systems are classifications used in thermodynamics to describe the exchange of energy and matter between a system and its surroundings.
- An open system allows both the exchange of energy and matter with its surroundings. For example, a pot of boiling water on a stove. The heat energy from the stove is transferred to the water, causing it to heat up and change state. As the water boils, it also releases steam, which is the matter being exchanged with the surroundings.
- A closed system allows the exchange of energy but not matter with its surroundings. An example of this is a sealed water bottle. The water inside can absorb heat or release heat to the surroundings, but no matter (water molecules) can enter or leave the bottle.
- An isolated system does not allow the exchange of energy or matter with its surroundings. An example is the universe as a whole. It is considered isolated because it is not affected by any external factors.
In summary, open systems allow both energy and matter exchange, closed systems allow energy exchange but not matter exchange, and isolated systems do not allow any energy or matter exchange.