Original Project
Energy: Forms, Transformation, Transfer, and Conservation
Item NG047003: When a ball that is 50ºF is placed in a bucket of water that is 80ºF, thermal energy is transferred from the water to the ball until they are both the same temperature.
The temperature of a clay ball is 50ºF and the temperature of the water in a bucket is 80ºF. A student places the clay ball into the bucket of water. Which of the following describes how thermal energy is transferred between the ball and the water?
- Thermal energy is transferred from the ball to the water until they are both at 75ºF.
- Thermal energy is transferred from the water to the ball until they are both at 75ºF.
- Thermal energy is transferred from the water to the ball until the ball is at 80ºF and the water is at 50ºF.
- No thermal energy would be transferred between the ball and the water, so the ball will stay at 50ºF and the water will stay at 80ºF.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 772 | 1506 | 51% |
| Grades | |||
| 6–8 | 441 | 941 | 47% |
| 9–12 | 329 | 562 | 59% |
| Gender | |||
| Male | 385 | 727 | 53% |
| Female | 377 | 757 | 50% |
| Primary Language | |||
| English | 709 | 1369 | 52% |
| Other | 43 | 93 | 46% |