Original Project
Energy: Forms, Transformation, Transfer, and Conservation
Item EG074002: The thermal energy of an object depends on the number and motion energy of the molecules that make up the object.
The thermal energy of an object depends on which of the following?
- Both the number and the average motion energy of molecules that make up the object
- The number of the molecules that make up the object, but not the average motion energy of molecules
- The average motion energy of molecules that make up the object, but not the number of the molecules
- Neither the average motion energy nor the number of molecules that make up the object
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 3243 |
6–8 n = 1768 |
9–12 n = 1466 |
Male n = 1558 |
Female n = 1617 |
English n = 2811 |
Other n = 332 |
||
| A. | Both the number and the average motion energy of molecules that make up the object | 42% | 40% | 44% | 41% | 43% | 43% | 39% |
| B. | The number of the molecules that make up the object, but not the average motion energy of molecules | 20% | 21% | 18% | 19% | 20% | 19% | 22% |
| C. | The average motion energy of molecules that make up the object, but not the number of the molecules | 27% | 26% | 27% | 27% | 26% | 26% | 27% |
| D. | Neither the average motion energy nor the number of molecules that make up the object | 12% | 12% | 11% | 13% | 11% | 12% | 12% |