Original Project
Energy: Forms, Transformation, Transfer, and Conservation
Thermal energy of an object is associated with the disordered motions of its atoms or molecules and the number a…
Item EG049002: For two objects that are made up of the same type of molecule and the same number of molecules, the molecules of the object with more thermal energy have the greater average speed.
Object 1 and Object 2 are both made up of the same type of molecule and the same number of molecules. Object 1 has more thermal energy than Object 2. Is the average speed of the molecules of Object 1 more, less, or the same as the average speed of the molecules of Object 2?
- The average speed of the molecules of Object 1 is more than the average speed of the molecules of Object 2.
- The average speed of the molecules of Object 1 is less than the average speed of the molecules of Object 2.
- The average speed of the molecules of Object 1 is the same as the average speed of the molecules of Object 2.
- More information is needed to say anything about the average speed of the molecules.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1537 | 3319 | 46% |
| Grades | |||
| 6–8 | 785 | 1849 | 42% |
| 9–12 | 744 | 1458 | 51% |
| Gender | |||
| Male | 781 | 1632 | 48% |
| Female | 737 | 1625 | 45% |
| Primary Language | |||
| English | 1365 | 2873 | 48% |
| Other | 139 | 348 | 40% |
- Disciplinary Core Ideas
- PS3.A Temperature is a measure of the average kinetic energy of particles of matter. The relationship between the temperature and the total energy of a system depends on the types, states, and amounts of matter present.
- NRC Framework
- Thermal energy is the random motion of particles (whether vibrations in solid matter or molecules or free motion in a gas)...