Original Project
Atoms, Molecules, and States of Matter
Item AM077002: The molecules of hot air move faster than the molecules of cold air.
How do the molecules of hot air differ from the molecules of cold air?
- The molecules of hot air move faster than the molecules of cold air.
- The molecules of hot air move slower than the molecules of cold air.
- The molecules of hot air move at the same speed as the molecules of cold air.
- It is not possible to say anything about how the molecules differ without more information.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1797 | 2900 | 62% |
| Grades | |||
| 6–8 | 1076 | 1857 | 58% |
| 9–12 | 715 | 1034 | 69% |
| Gender | |||
| Male | 891 | 1434 | 62% |
| Female | 886 | 1434 | 62% |
| Primary Language | |||
| English | 1625 | 2547 | 64% |
| Other | 140 | 304 | 46% |
- Notes
- See NGSS performance expectation MS-PS1-4: Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.