Original Project
Energy: Forms, Transformation, Transfer, and Conservation
Item NG022003: When water that is 40ºF is poured into a cup that is 70ºF, thermal energy is transferred from the cup to the water until they reach the same temperature.
The temperature of a plastic cup is 70ºF. It is filled with water that is 40ºF. Which of the following describes how thermal energy is transferred?
- Thermal energy is transferred from the water to the cup until they are both at 45ºF.
- Thermal energy is transferred from the cup to the water until they are both at 45ºF.
- Thermal energy is transferred from the cup to the water until the cup is at 60ºF and the water is at 50ºF.
- No thermal energy is transferred between the cup and the water, so the cup will stay at 70ºF and the water will stay at 40ºF.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
|||
|---|---|---|---|---|---|---|---|
| n = 3015 |
6–8 n = 1843 |
9–12 n = 1162 |
Male n = 1447 |
Female n = 1509 |
English n = 2709 |
Other n = 222 |
|
| A. | 23% | 23% | 22% | 23% | 23% | 22% | 26% |
| B. | 35% | 31% | 41% | 34% | 35% | 35% | 33% |
| C. | 30% | 32% | 28% | 31% | 29% | 31% | 25% |
| D. | 12% | 15% | 8% | 12% | 13% | 12% | 16% |