ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item NG076004: The total amount of energy in a system remains the same unless energy enters or leaves the system.
Which of the following statements about the total amount of energy in a system of interacting objects is TRUE?
- The total amount of energy in the system always increases when the objects in the system are moving.
- The total amount of energy in the system always decreases unless energy is added to the system.
- The total amount of energy in the system remains the same unless energy enters or leaves the system.
- The total amount of energy in the system can increase or decrease even when no energy enters or leaves the system, but the forms of energy present in the system must remain the same.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 507
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1989 | 5104 | 39% |
| Grades | |||
| 4–5 | N/A | N/A | N/A |
| 6–8 | 1003 | 2967 | 34% |
| 9–12 | 986 | 2137 | 46% |
| Gender | |||
| Male | 940 | 2409 | 39% |
| Female | 1008 | 2592 | 39% |
| Primary Language | |||
| English | 1814 | 4507 | 40% |
| Other | 132 | 493 | 27% |